A pocket mouse that does a lot.

The new Logitech Cube is a tiny pocket mouse with a built-in rechargable battery. But wait, there’s more! When you hold the Cube in the air, it becomes a way to control photos in a visual presentation. You can go forward, or reverse. There's also a touch scrolling feature. It ships with the tiny Logitech Unifying receiver that lets you connect up to six Unifying-compatible devices. So the Cube works with your other Logitech Unifying devices (if you have any) without taking up another USB port. Under $70

 http://www.logitech.com/en-us/mice-pointers/mice/devices/9472