Picture of wacky waving inflatable flailing tube monster

Aaaaaahhh, MONSTERS!
Don't worry, these monsters are friendly...I think.

Just like those crazy arm-flailing inflatable tube men seen at outdoor events, make your own scale variant with a reused computer fan, and some multi-coloured blinking LED's. This monster is sure to brighten up any space and maybe even spook you, too.

This project uses an interchangeable thin plastic sock as the monster. You can make a few different socks and have a monster party, or you can replace the inflatable plastic sock monster with strips of fabric and create a faux fire, like this one.
The principle of air current and LED's are the same.

This Instructable won Runner-Up in the Monster Contest
Check out all the entries!

Enough talk, let's inflate a monster!

Step 1: Tools + materials

Picture of tools + materials
  • soldering kit
  • hobby knife
  • sandpaper
  • drill + bits (3mm [1/8"] )
  • glue gun
  • contact cement
  • marker
  • rule
  • pencil
  • 2 x 5mm multi-colour (slow blink)
  • 2 x 5mm triple-colour (fast blink)
  • 1 x 12V battery / 12V power source
  • 1 x 80mm [36"] (diagonal) fan finger guard
  • hobby box (L:20cm x W:20cm x H:10cm [8" x 8" x 4"])
  • 12v fan
  • fan finger guard
  • 1 x on/off switch
  • scrap wood shims (wood coffee stir-sticks)
  • light-weight fabric / thin plastic tablecloth

Ninzerbean4 years ago
Way cool!
Cheeseduck4 years ago
Whacky Waving Inflatable Arm-Flailing Tube Man!
ChrysN4 years ago
TOCO4 years ago
This is a very cool and simple to do project. I am surprised to see only 3 other comments at this time.
caitlinsdad4 years ago
And where we you when ibles needed your services?
Jayefuu4 years ago
We have a few dozen old PC case fans lying around at work... and a half dead hoover. Are you thinking what I'm thinking?
happyjo4 years ago
Reminds me of Clacifur! :D