Mechanical Mashup Episode 20 Hack a $4 flashlight into a scuba diving light with a laxative!
Dave shows a BRILLIANT hack to take an ordinary cheap LED flashlight from HomeDepot and waterproof it so that it is capable of scuba diving past 80 feet! Its one of those OHMYGODTHATISFRIGGINBRILLIANT projects. Enjoy! Here is the instructable or print worthy version of this cast Here is the video file to download