Gyro 4 volt Rechargeable Screwdriver BDCS40G, by Black & Decker
Toy tech comes to tools: A Wii-like gyroscopic sensor means this light-duty driver needs no trigger. Twist your hand right to tighten, left to loosen; the more you rotate, the faster the bit spins. The built-in battery holds a charge for 18 months, making it our go-to kitchen-drawer tool.
About $40; blackanddecker.com