Every guide to how to make an advent calendar spends its words on the envelopes and one line on what goes inside them. The inside is the hard part. Twenty-four doors means 24 separate ideas, and they are due one a day, starting 1 December. This guide flips the order. The build takes five steps and one evening. The 24 door ideas are copy-paste prompts, so a chat assistant writes the notes, riddles and coupons for one specific person.
You also get prompts for printable door art from an image model such as ChatGPT or Gemini, and a five-minute iPhone Reminders setup. The reminder makes sure nobody forgets a door in the second week. Advent 2026 begins on Sunday 29 November in the church calendar, while most calendars open their first door on 1 December, so the deadline is the end of November.
The Key Takeaways
- Contents first: any container works for an advent calendar. The 24 door ideas are what take the time, so write them before you buy envelopes.
- One prompt, 24 doors: a single copy-paste prompt gives a chat assistant the recipient, the tone and the rules, and returns a full 1 to 24 December plan.
- Printable doors: an image model makes numbered door tiles, a full 24-door sheet or a colouring page. Check every number before you print.
- Daily reminder: one repeating reminder in the iPhone Reminders app, shared with a partner over iCloud, keeps the calendar going until Christmas Eve.
- Start date: most calendars run 1 to 24 December. The church season starts on the Sunday closest to 30 November, which is 29 November in 2026.
How to Make an Advent Calendar in 5 Steps
To make an advent calendar, fill 24 containers with notes, treats or activities and number them 1 to 24. Open one a day from 1 December to Christmas Eve. The five steps below take one evening, and step 2 is the only one that needs real thought.
- Choose a container. Envelopes, paper bags, small boxes or a printed sheet with flaps. Envelopes suit notes and flat gifts; bags and boxes suit treats.
- Write the 24 contents. A chat assistant drafts all 24 from one prompt, then you rewrite them in your own words. Print the notes or copy them out by hand.
- Make the door art. Generate numbered tiles or a full sheet with an image model, then print it on card.
- Number, fill and hang. Put each note or treat in its container, stick the number on, and hang or stack the doors in order. Shuffle the order on the wall if the hunt for today's number is part of the fun.
- Set a daily reminder. One repeating reminder on your iPhone at the time the door gets opened.
Two popular craft guides agree on the materials. Ideal Home's step-by-step build uses envelopes, ribbon, sticky numbers and a garland of foliage. Home Beautiful pegs 25 envelopes to cord on a painted pinboard. Neither one tells you what to write on the 24 cards, and that is the gap this guide fills.
Which Kind of Advent Calendar Should You Make?
An envelope calendar is the best first build: it holds notes and flat gifts, costs almost nothing and hangs anywhere. Pick a different container only when the contents need it, such as small toys, sweets or a calendar a child opens without help.
| Container | What you need | Holds | Effort | Best for |
|---|---|---|---|---|
| Envelopes on a string | 24 small envelopes, pegs, twine | Notes, coupons, photos, flat gifts | Low | Partners, adults, note-only calendars |
| Paper bags | 24 paper treat bags, ribbon, number stickers | Sweets, small toys, notes | Low | Kids, mixed treats and notes |
| Small boxes or matchboxes | 24 boxes, wrapping paper, glue | Jewellery, tiny gifts, folded notes | Medium | A gift calendar for one person |
| Printable door sheet | Card, a printer, a craft knife | A message or picture behind each flap | Medium | Long distance, classrooms, last-minute |
| Jar of folded notes | A jar and 24 slips of paper | Notes and activity slips only | Lowest | Families, offices, no wall space |
A printable door sheet is the one container AI changes the most. The image model draws the doors, the chat assistant writes what sits behind them, and the result posts in a regular envelope to someone who lives far away.
24 Copy-Paste Advent Calendar Ideas
The 24 ideas below are door types, each with a prompt you paste into ChatGPT, Claude, Gemini or any other chat assistant. Swap the words in square brackets for your own details. Mix six from each group for a balanced calendar, or start with the master prompt and let the assistant plan all 24 doors at once.
Write All 24 Doors With One Prompt
The master prompt gives the assistant everything a good calendar needs: who it is for, what they like, the mix of door types and the rules for the last door. Paste it, read the plan, then ask for changes to any day that falls flat.
Prompt: Plan a homemade advent calendar for [NAME], who is [AGE / RELATIONSHIP TO ME]. They love [3 INTERESTS] and we share these memories: [2 OR 3 MEMORIES]. Write 24 doors, one for each day from 1 to 24 December. Mix four door types evenly: personal notes, small activities we can do together at home, puzzles or riddles, and free gifts such as coupons. Keep every door under 50 words so it fits on a card the size of a playing card. Put the cheapest, quickest doors on weekdays and the longer activities on weekends in December 2026. Make door 24 a short Christmas Eve letter that refers back to at least three earlier doors. Return a numbered list: day, door type, the exact text for the card.
Run the master prompt once per person. A calendar written for a partner reads wrong on a child, and the assistant writes better notes when it only has one reader to picture.
Notes and Messages (Doors 1 to 6)
Note doors cost nothing and take the most care, so let the assistant draft them and then rewrite each one in your own words.
1. The memory door. One shared memory, told in two sentences.
Prompt: Write a two-sentence advent note to [NAME] about this memory: [MEMORY]. Mention one specific detail from it, end with a line that makes them smile, and do not use the words "magical" or "cherish".
2. The compliment door. One thing you have noticed about them this year.
Prompt: I want to tell [NAME] something I admire about them. Here is what I have noticed this year: [2 OR 3 THINGS THEY DID]. Turn one of them into a short, specific compliment for an advent card, under 30 words, warm but not soppy.
3. The 24 reasons door. One reason a day, for a partner.
Prompt: Help me write 24 short reasons I love [PARTNER'S NAME], one per advent door. Here are facts to build from: [HABITS, INSIDE JOKES, THINGS THEY DO FOR ME]. Each reason is one sentence, concrete, and different from the others. Save the most heartfelt one for door 24.
4. The letter from the North Pole. For a child who still writes to Santa. On a later door, Santa can answer in person with an AI Santa video.
Prompt: Write a 60-word letter from one of Santa's elves to [CHILD'S NAME], age [AGE]. Mention something real they did this week: [EVENT]. Keep the language right for their age, add one small task for them to do today, and sign it with a funny elf name.
5. The thank-you door. One thing from this year you never said thanks for.
Prompt: Write a short thank-you note for an advent door. I am thanking [NAME] for [WHAT THEY DID] in [MONTH]. Explain in one sentence what it changed for me. No more than 40 words.
6. The story in 24 chapters. One chapter a day of a story starring the reader.
Prompt: Write a Christmas story in 24 chapters for [NAME], age [AGE], who is the hero. Each chapter is under 80 words and ends on a small cliffhanger, except chapter 24, which ends the story on Christmas Eve. Include their pet [PET] and their favourite thing [THING]. Number the chapters 1 to 24.
Things to Do Together (Doors 7 to 12)
Activity doors turn the calendar into small plans for the evening, so the door gives the family something to do, not just something to eat.
7. The kitchen door. A 20-minute bake with what is already in the cupboard.
Prompt: We have these ingredients: [LIST]. Suggest one festive bake or snack we can make in 20 minutes with a [AGE]-year-old helping. Give the steps as a short numbered list that fits on one card.
8. The craft door. A ten-minute decoration from household bits.
Prompt: Suggest a Christmas decoration we can make in 10 minutes using only [WHAT WE HAVE: PAPER, TAPE, OLD SOCKS, ETC.]. No glue gun, nothing sharp for the kids. Write it as four short steps.
9. The kindness mission. One small good deed for someone else.
Prompt: Give me one small act of kindness a family can do today in [TOWN OR SITUATION], in under 30 minutes and for free. Write it as a mission card: a title, one sentence on what to do, one sentence on why it matters.
10. The winter walk hunt. A list of things to spot outside.
Prompt: Make a winter scavenger hunt for a 20-minute walk around [TYPE OF AREA: CITY STREET, PARK, VILLAGE]. List eight things to find, mixing easy and tricky ones, and suitable for age [AGE]. Format it as a checklist that fits on one card.
11. The film night door. One film and a snack that matches it.
Prompt: Suggest one Christmas film for tonight that suits [AGES IN THE FAMILY] and that we have not seen: [FILMS WE HAVE SEEN]. Add a snack idea themed on the film, and one question to talk about afterwards.
12. The kitchen disco. Five songs and one silly rule.
Prompt: Build a five-song Christmas playlist for a 15-minute kitchen dance party. Our family likes [MUSIC TASTE]. Add one silly rule for each song, for example: freeze when the chorus starts.
Puzzles and Games (Doors 13 to 18)
Puzzle doors make the reader work for the day's treat. Check every answer before it goes in an envelope, because a chat assistant writes a wrong riddle answer as confidently as a right one. For more prompt games, the list of games to play with ChatGPT works on the same rules.
13. The hiding-place riddle. A riddle whose answer is where the treat is hidden.
Prompt: Write a four-line rhyming riddle for a [AGE]-year-old. The answer is [HIDING PLACE, FOR EXAMPLE THE WASHING MACHINE]. Make it solvable in under two minutes, and give me the answer separately so I can check it.
14. The treasure trail. A chain of clues around the house.
Prompt: Write a five-clue treasure hunt through these places in our home, in this order: [PLACE 1, PLACE 2, PLACE 3, PLACE 4, PLACE 5]. Each clue points to the next place. The last clue leads to the gift. Keep each clue to two lines, right for age [AGE].
15. The emoji film quiz. Christmas films told in emoji.
Prompt: Make a quiz of six well-known Christmas films, each described only with three to five emoji. Put the answers in a separate list at the end. Pick films a [AGE]-year-old would know.
16. Would you rather. Six festive dilemmas for the dinner table.
Prompt: Write six funny Christmas "would you rather" questions for a family dinner with ages [AGES]. Nothing gross, nothing about money, and each one short enough to read aloud in one breath.
17. The trivia door. Five questions with the answers on the back.
Prompt: Write five multiple-choice trivia questions about [TOPIC: WINTER ANIMALS, CHRISTMAS AROUND THE WORLD, OUR FAVOURITE FILM]. Give three options each and mark the correct answer. Only use facts you are sure of, and tell me which ones I should double-check.
18. The fill-in story. A Christmas story with blanks the reader fills.
Prompt: Write a 100-word Christmas story with ten blanks for the reader to fill in, each labelled with what to supply, such as (a noun), (a silly name) or (a number). Right for age [AGE].
Gifts That Cost Nothing (Doors 19 to 24)
Free gift doors fill the gap when the budget runs out before 24 December, and they last longer than a chocolate.
19. The coupon door. A promise they cash in later.
Prompt: Write the text for a coupon [NAME] can redeem from me: [THE FAVOUR, FOR EXAMPLE BREAKFAST IN BED OR ONE CHORE SKIPPED]. Give it a funny title, the terms in one line, and an expiry date in January 2027.
20. The playlist door. Five songs picked for one person.
Prompt: Suggest five songs for a playlist made for [NAME], who loves [ARTISTS OR GENRES] and is going through [WHAT IS HAPPENING IN THEIR LIFE]. One sentence per song on why I picked it, written as if I am talking to them.
21. The family recipe card. A recipe written up for keeps.
Prompt: Here is my family's recipe as I remember it: [ROUGH NOTES]. Rewrite it as a clean recipe card with ingredients and numbered steps. Keep my grandmother's phrase "[PHRASE]" in it, and do not change any quantities.
22. The tiny poem. A limerick or four-line poem about them.
Prompt: Write a limerick about [NAME] and [ONE FUNNY HABIT OR STORY]. Affectionate, not mean. If the rhyme forces a word that sounds wrong, pick a different rhyme.
23. The question door. One good question for a quiet evening.
Prompt: Give me one thoughtful question I can ask [NAME] tonight over tea, about [THIS YEAR / CHILDHOOD / THE FUTURE]. It should take more than one sentence to answer and not be about work.
24. The Christmas Eve letter. The last door ties the other 23 together.
Prompt: Here are the 23 advent doors I gave [NAME] this December: [PASTE THE LIST]. Write a Christmas Eve letter of about 120 words that mentions three of them, says what this month meant to me, and ends with [WHERE THE BIG GIFT IS, OR A PLAN FOR CHRISTMAS DAY].
A calendar for a younger child needs a lighter touch. If the kids will type to the assistant themselves, read the guide to setting up ChatGPT for kids first. For more holiday uses beyond the calendar, see these creative ways to use AI at Christmas. If Halloween comes first in your house, the AI Halloween trend guide has ten copy-paste photo prompts.
How to Make an Advent Calendar Printable With AI
An image model such as ChatGPT Images or Google's Nano Banana draws the door art from a text prompt. It makes single numbered tiles, a full sheet of 24 doors, or a colouring page. You print it on card and cut the flaps. The four prompts below cover each format, and the same rules from the Nano Banana prompt guide apply: name the subject, the style, the layout and the aspect ratio. For a door that shows your own family, our AI Christmas photo prompts turn a real photo into a festive portrait that keeps every face.
Door Art Prompts
A single door tile. One square tile per number, for envelopes, bags or boxes.
Prompt: A square advent calendar door tile, 1:1. A small wooden door in a snowy cottage wall, with a holly wreath and a warm light in the window. The number "[NUMBER]" is painted large and clear in the centre of the door in cream on dark green, in a rounded serif font. Flat illustration style, soft winter colours, no other text, plain white border for cutting.
A full 24-door sheet. One page with every door, for a flap calendar.
Prompt: A printable advent calendar sheet in portrait, 3:4. The front of a snowy Christmas village street at dusk, with 24 small windows and doors spread across the houses. Each one carries a clear number from 1 to 24, every number used exactly once, in a random order. Numbers in white on dark red circles, large enough to read from a metre away. Flat illustration, warm lights, falling snow, no other text.
A colouring page. Black outlines a child colours in before the calendar goes up.
Prompt: A children's colouring page in portrait, 3:4: a big Christmas tree decorated with 24 round baubles, each bauble numbered 1 to 24 once. Clean black outlines on white, thick lines, large simple shapes, no shading, no grey, no background clutter. Suitable for age [AGE].
A set of gift tags. Labels for bags or boxes in one matching style.
Prompt: A sheet of six rectangular gift tags in landscape, 3:2, arranged in two rows of three with space between them for cutting. Each tag shows a different winter motif (mitten, gingerbread house, robin, sledge, star, mug of cocoa) and the numbers [6 NUMBERS] in a clean hand-lettered style. Cream background, red and green accents.
Print It So It Works
Check every number on the generated image before you print, because a missing or doubled number only shows up on the day it is needed. Ask ChatGPT or Gemini to regenerate the sheet if one is wrong, rather than fixing it by hand. Print on card rather than copier paper, so the flaps hold their shape, and choose actual size in the print dialogue so the tiles do not shrink. For a flap calendar, cut three sides of each door with a craft knife and fold along the fourth.
Keep one style sentence and reuse it word for word in every door prompt, so tile 17 matches tile 1. For a bigger print project built with AI, see how we built a printable murder mystery case file with a multi-model workflow.
Set a Daily Advent Calendar Reminder on iPhone
A repeating reminder in the iPhone Reminders app keeps a homemade advent calendar on schedule: one reminder, repeating daily from 1 December, at the time the door gets opened. Apple's guide to adding details in Reminders lists every option used here.
- Open Reminders and create a new reminder titled Open today's advent door.
- Tap the reminder, turn on Date and Time, and set 1 December 2026 at the time you want, for example 7:30 in the morning.
- Tap Repeat and choose Daily.
- Turn on Urgent if you want an alarm, not just a notification.
- After you open door 24 on Christmas Eve, delete the reminder so it stops on 25 December.
Share the Reminder With a Partner
A shared Reminders list sends the same daily advent reminder to both parents, so the calendar does not depend on one phone. Put the reminder in its own list, tap the share button and send the invitation by Messages or Mail. Apple's iPhone guide says everyone on the list sees each other's changes, and each person needs an Apple Account with Reminders turned on in iCloud.
Use the reminder's note field as a backup copy of the day's door. Paste each door's text into the note before you go to bed, and the morning reminder carries the message even if the envelope goes missing. Apple Intelligence on iOS 27 adds a shortcut. Type a plain sentence such as Advent door every morning at 7:30 from 1 December, and Reminders fills in the details and timing. Apple lists this for iPhone 15 Pro, iPhone 15 Pro Max and iPhone 16 models or later.
Make the Notes and the Door Art in Fello AI
Fello AI writes the 24 notes and draws the door art in the same app, so the whole calendar happens in one place. Paste the prompt that plans 24 doors for one person into a chat with GPT, Claude or Gemini. Compare how each model handles the notes, and keep the version that sounds most like you.
Then switch to image generation, which runs on OpenAI's GPT Image, and paste a door-tile or village-sheet prompt. The tile prompts work one number at a time, so ask for door 1, check it, then ask for door 2 in the same style. Fello AI runs on Mac, iPhone and iPad and has a free tier.
Write the Doors First, Then Build the Box
The container is the easy part of a homemade advent calendar. Any envelope, bag or printed flap works. What makes a calendar memorable is 24 doors written for one specific person, and that is the part an AI assistant does best when you feed it real details. Run the master prompt this week, cut the doors that sound generic, and replace them with your own lines. Then print the art, fill the envelopes, and set the reminder before 1 December.
FAQ: How to Make an Advent Calendar
What is an advent calendar?
An advent calendar counts down the days to Christmas with one door, envelope or pocket to open each day, usually 1 to 24 December. The tradition comes from 19th-century Germany, where families marked the days with chalk lines on doors. German printer Gerhard Lang is credited with the first printed advent calendar in the early 1900s.
When do you start an advent calendar?
Most advent calendars start on 1 December and finish on 24 December, Christmas Eve. The church season of Advent starts on the Sunday closest to 30 November, according to the US Conference of Catholic Bishops. In 2026 that is 29 November, so some families open the first door then.
How many days are in an advent calendar?
A standard advent calendar has 24 doors, one for each day from 1 to 24 December. Some homemade calendars add a 25th door for Christmas morning. A calendar that follows the church season starts on the first Sunday of Advent, which falls between 27 November and 3 December, so its length changes each year.
Can ChatGPT make an advent calendar?
Yes. ChatGPT writes all 24 door notes from one prompt and generates printable door art with its built-in image model. You still print, cut and fill the calendar yourself. Give it real names, memories and interests, or the notes come out generic.
What do you put in a homemade advent calendar for adults?
Adults like doors that cost little and mean a lot. Think of a shared memory, a coupon for a favour, a five-song playlist or a question for the evening. A small treat such as good chocolate or a tea bag works too. Mix notes with activities, and save the best letter for door 24. The same approach works for a partner on other dates too, as in these AI Valentine's Day prompts.
