404 Costume Not Found: a DIY Halloween costume made from cardboard, worn by Arlo, AI-generated model

AI-generated picture to show the idea. Yours will look handmade.

404 Costume Not Found

The laziest funny costume going: a cardboard browser error page worn like a sandwich board. A sad face, a big 404, and the words Costume not found. It takes twenty minutes and everyone at the party will get it.

TIME
20 min
COST
about $5
SKILL
Easy

What you need

  • One flat cardboard sheet about 50 by 60 cm
  • Black marker and a grey marker
  • Rope for two shoulder straps
  • Scissors

How to make it

  1. 1

    Cut the board to a tall rectangle. Draw a grey strip along the top and put three small dots in it, like browser buttons.

  2. 2

    Underneath, draw a big sad face with a marker: two dots and a downturned line in a circle.

  3. 3

    Write a huge “404” under the face, and “Costume not found” below it.

  4. 4

    Punch two holes at the top, thread the rope for shoulder straps, and wear it on your chest. A second board on your back is optional.

Make it better

  • When someone asks who you are, say “I can't find it.”
  • Add a tiny footer: “Go back to the party”.

Questions

Can I make it bigger for a group?

Yes. Stand a few people in a row with a board each and write one letter of 4-0-4 on each of three of them.

Wear it in front of your own haunted CCTV

Upload four photos of your house and Cursed Cam turns them into a night-time security monitor where something is very wrong. Put it on the TV by the door.

Goes with

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