Picture of LED Pattern Hat
This is a (moderately) simple Arduino project that is a spectacular display from LEDs - that you can wear on your head! It also uses a program that is not intricate at all, so you can modify it for different patterns and cycles. It's also a great first or second project for people new to Arduino. And, of course, it looks great in the dark!

(I know the video isn't ideally situated; I'll try to fix that soon)

Step 1: Parts List

Picture of Parts List
photo 2-1.JPG
photo 2.JPG
You will need:

A hat (of course)
16 paperclips
24 LEDs for the version pictured - Radioshack sells a bundle of red, yellow and green LEDs, which is what I used x2
Jumper wires
Duct tape
9V battery
9V connector or plug
Electrical Tape
Fishing line or string
Very small breadboard
Arduino Uno, Leonardo, etc.
Hackerstore10 months ago

Very nice project, it's is a real tinkering project. Good for dark nights in the winter, also because the over-heated ATMega will keep extra your warm :-)