The Treadwall ($TBA) is exactly what it sounds like — a treadmill for wall climbing. The standalone device offers auto-stop technology for self-paced climbing, adjustable angles and holds to diversify the experience, a Polar heart-rate monitor, and built-in safety — since you're never more than a few feet from the floor, you simply hop off when you're finished. American Gladiators, here we come. [Thanks, Jeff]
Enjoy a new seaside activity with the Waboba Ball ($10). Made from a mix of polyurethanes with a Lycra coating, the ball both bounces and floats on water, crucial properties for the ball's game, in which two teams of three attempt to bounce the ball off the water to their teammates without having the pass intercepted. Sure, it's not the most intricate game, but simplicity is nice when you're trying to play a drunken game without getting sucked out to sea by a rip current.