Gotcha Gadgets – A book with a built in electronic mischief maker

Boing BoingGotcha Gadgets – A book with a built in electronic mischief makerBoing BoingBuild Your Own Gotcha Gadgets comes with a multifunction electronic circuit, wires, and sensors that kids can use to build a variety of pranksterish devices: A cookie jar that sounds an alarm when the lid is removed, an electronic whoopie cushion, an ...