We're taking, er, a leap of faith here, but the Leap's concept is simply too geeky cool to not give it a shot. The Leap is a USB-connected small box that lets you use hand motions to control your OS X, Windows 7, or Windows 8 computer. Essentially, it watches your hand, finger, and pen movements anywhere in a 8-cubic-foot space and interprets them as commands. (App developers define what the gestures mean, and the company expects to see uses such as 3D manipulation for games, modeling, and industrial control systems). If you're intrigued by the "Star Trek" holosuite or "Minority Report" consoles, you simply gotta try this.
Product: Leap Motion Leap
Price: $70 (ships in early 2013)