Technology Costumes

Technology Costumes

Plug into Halloween with clever, creative, and easy tech-themed costumes.

Technology costumes are a brilliant choice for office parties, IT professionals, and anyone who loves a clever, modern pun. This guide focuses on creating a classic 'Error 404: Costume Not Found' look or a retro desktop computer screen. These outfits are highly customizable, instantly recognizable, and incredibly easy to assemble using everyday items.

Difficulty
Easy
Time
~30 min
Budget
$15–50
See yourself in one of these →What you need

Try it on

See yourself as Technology Costumes

One clear photo of yourself; we render you in this costume — face untouched, full body, about 20 seconds.

One render, $1. No account needed — if it fails you're not charged. Pricing.

Your photo is sent to Google's Gemini API to make the render and isn't used for training. Renders are AI-generated and labelled.

Want a different costume on this photo, or a whole group in costume? Open the Try-On Studio.

Your photo
Example look · AI-generated
You as Technology Costumes
Result

40 Technology costume ideas

Ranked by how many people are searching for them this season. Open any one for the full guide and to try it on.

What you need for a Technology Costumes costume

  • Plain White T-Shirt

    A basic, solid white cotton crewneck t-shirt to serve as your canvas.

    DIY: Use any solid-colored t-shirt you already own.

    Amazon

  • Black Fabric Marker or Iron-On Letters

    Used to write the classic 'Error 404: Costume Not Found' text on the shirt.

    DIY: Cut letters out of black felt or construction paper and safety-pin them on.

    Amazon

  • Cardboard Box

    A flat, medium-sized cardboard box to fashion into a retro computer monitor or smartphone frame.

    DIY: Upcycle a clean delivery box from home.

    Amazon

  • Silver or Gray Acrylic Paint

    To paint the cardboard frame to look like plastic computer casing.

    DIY: Wrap the cardboard in aluminum foil for a shiny, metallic finish.

    Amazon

  • Thick Black Cord or Cable

    An old, unused USB or power cable to drape around your neck or carry as a prop.

    DIY: Use black yarn or a jump rope to simulate a power cord.

    Amazon

How to put it together

  1. 1

    Decide on your tech theme: either the minimalist 'Error 404' shirt or the wearable cardboard computer screen.

  2. 2

    For the Error 404 shirt, use a ruler to trace straight lines on the white t-shirt, then write 'Error 404: Costume Not Found' in bold, block letters using a black fabric marker.

  3. 3

    For the computer screen, cut out the center of a flat cardboard box so it fits around your face like a frame.

  4. 4

    Paint the cardboard frame silver or gray, and let it dry completely.

  5. 5

    Draw or print classic desktop icons (like a recycling bin or internet browser) and glue them to the corners of the frame.

  6. 6

    Attach an old USB cable to the bottom of the frame to hang down like a tail.

  7. 7

    Put on the shirt, hold or wear your cardboard screen frame, and carry a laptop or keyboard as an optional prop.

Makeup & hair

Keep hair neat and professional, or style it into messy 'stressed programmer' hair. Makeup should be minimal, perhaps with slight dark circles under the eyes painted on with light brown eyeshadow to simulate staring at screens all night.

Technology Costumes for couples, groups, kids & more

couples
One person wears an 'Error 404: Costume Not Found' shirt, while the other wears a 'Wi-Fi Signal' shirt or dresses as a Wi-Fi router.
group
A group can dress as different classic computer error messages, social media icons, or the keys 'Ctrl', 'Alt', and 'Delete'.
kids
A cardboard smartphone costume with colorful, printed app icons glued to the front.
Plus size
The t-shirt and cardboard frame designs are universally adjustable and fit comfortably over any clothing.
pet
A small cardboard box painted like a retro game console or a 'loading' wheel attached to a pet harness.

Tips

  • If you are wearing a cardboard frame, attach a soft foam strip to the inner edge where it rests against your chin or forehead for comfort.
  • Keep your hands free by attaching a strap to your cardboard screen so you can wear it like a necklace.
  • For office environments, keep the props lightweight so you can still type and work comfortably.
  • Use reflective tape on your costume if you plan to walk around outdoors at night.

Technology Costumes costume FAQ

What is the easiest DIY technology costume?
The easiest look is the 'Error 404: Costume Not Found' t-shirt, which only requires a plain white shirt and a black fabric marker.
How do I make a wearable cardboard computer screen?
Cut the center out of a flat cardboard box, paint it silver, glue printed desktop icons to the corners, and attach a string to hang it around your neck.
What are some funny tech costume ideas?
Popular ideas include dressing as a 'Buffering' wheel, a computer virus, a giant floppy disk, or the blue screen of death.

Did you know? The 'Error 404' costume became a viral sensation in the early 2010s as the ultimate lazy, humorous DIY option for software engineers and tech enthusiasts.