Bedazzler - DIY non-lethal weaponry: "After attending a conference where the $1 million 'sea-sick flashlight' (named 'THE DAZZLER') was demonstrated by the US Dept. of Homeland Security, we decided to create our own version. For under $250, you can build your own dazzler and we've released the source code, schematics and PCB files to make it easy. A great Arduino project for people who really like blinking LEDs. We also added in a mode selection so you can put it into some pretty color-swirl modes, great for raves and parties!
Yes this project does indeed cause: Nausea, dizziness, headache, flashblindness, eye pain and (occasional?) vomiting! So don't use it on your friends or pets"