I decided to build my own LED flashlight. Not being convinced "round" is the way to go, I built it rectangular. It is a little larger than a cell phone. It makes it easier to sit down and make sure it does not roll. Lay it under a car, or possibly on the top of a drop ceiling while working on wiring. It is over 500 lumens of bright white light. It can be programmed with any computer to do what ever you like. It is microprocessor controlled. Make one of the functions a strobe light. Or possibly make it flash S-O-S in Morse code. It can mount to a tripod to enhance your eBay pictures! I designed a unique LED driver circuit. You can control the brightness with PWM. You can charge your iPod or iPad with it. Here are a few pictures: