Behold: Instructables.

By some long-winded passage through the "internet" I stumbled across this potentially awesome site, with instructions for a head-mounted megaphone, nuclear bomb reenactment, disposable scrabble, robotic arms, and air-powered bicycle, complete with .pdf's and .mpg's and .asm's and .ai's and even (!) .sldprt's and .sldasm's!