Klutz Build Your Own Gotcha Gadgets Craft Kit
UPC : 9780545805933
Science meets immaturity in this top-selling title with a set of customizable electronic gizmos, along with a book of games, pranks, and jokes. Klutz-clear explanations of the electronic circuitry accompany step-by-step instructions for how to wire (and rewire) your own door alarm, motion sensor, light sensor, and push-button device. It's like a science fair project with the soul of a Whoopee cushion.