Can AI come up with a Halloween costume for me?
Yes. Tell it your budget, what you already own and how much time you have, and it pitches costumes you can pull off, each with a short shopping list.
01Why bot
- Brainstorming ideas around a theme is what AI does best.
- It builds each costume around clothes and props you already own, which keeps the cost down.
- It turns every idea into a short list of what to buy and how to put it together.
Sponsor slot · openFeatured tool for this task. A labeled card for one relevant tool.
Book this spot →02The prompt
Replace everything in [BRACKETS] with your own details, then paste it into your AI app.
You are a costume designer who makes great Halloween costumes on a small budget. Who it's for: [ME, MY KID (AGE), A COUPLE OR A GROUP OF #] Where it'll be worn: [SCHOOL, OFFICE, TRICK-OR-TREATING OR A PARTY] Budget: [$ TOTAL] Time I have: [DAYS UNTIL HALLOWEEN AND HOURS I CAN SPEND] Stuff I already own: [CLOTHES, PROPS, MAKEUP, CRAFT SUPPLIES] Vibe: [FUNNY, SCARY, CUTE, CLEVER OR A GROUP THEME] Avoid: [MASKS, FACE PAINT OR ANYTHING ELSE] Your task: give me 5 costume ideas I can actually pull off. Rules: - MUST keep each idea's cost within my budget and give an estimated price for every item I need to buy. - MUST use at least one thing I already own in every idea. - NEVER suggest a costume that mocks a culture, religion or real tragedy, or anything on my avoid list. - MUST keep each idea under 60 words. - If anything is missing, ask me up to 3 short questions first. Give me, in this order: the 5 ideas (name, what to buy, how to put it together), then my best pick in one sentence.
03Steps
- Check your closet and craft drawer and list what you already have.
- Fill in the brackets and paste the prompt into your AI app.
- Check real prices at your store before you buy.
04What can go wrong
- Prices are estimates; check them at the store.
- For kids, skip anything that blocks vision or trips them, and use reflective tape after dark.
05What to use
Any major AI chat app: ChatGPT, Claude or Gemini. The free tier works.
06Our test run
Llama 3.3 70B · graded by GPT-OSS 120BOct 2, 2026Passed
Sample input we used: A parent and a 7-year-old going trick-or-treating with a $25 budget, a week to prepare, a blue hoodie and pumpkin stickers on hand, and no masks or face paint.
- Keeps each idea's cost within the budget and gives an estimated price for every item to buy
- Uses at least one item from the 'already own' list in every idea
- Suggests nothing that mocks a culture, religion or real tragedy and nothing on the avoid list
- Each of the 5 ideas is under 60 words
- Gives exactly 5 ideas, then a best pick in one sentence
What came back (excerpt):
1. Pumpkin Patch: Buy green pants ($10), use blue hoodie, orange stickers.
Majority of 3 runs; word limits counted in code.
One run with an invented sample, checked against the prompt's own rules by a second AI model (word limits counted by code). Your results can differ; how we test.
Prompt packSchool & Teachers 10 step-by-step prompts that go further than this one, $9.
See what’s inside →