Bondic is a liquid plastic welder that can be used to bond, fill in, or even build plastic, metal, and wood parts. Repair everything from toys to eyeglasses to jewelry. - I think it's a sonic screwdriver
Control your world with your Pi without programming. This Instructable shows you how to use a simple affordable extension board named PiFace on top of the Raspberry Pi to control the world around you, without any technical skill.