Laptops give off a lot of heat. And that heat seems to do nothing but ionize into the atmosphere. Here is a concept from Dormino. The Dormino Mouse.

“The DORmino mouse takes all of that wasted heat and uses it to power a wireless mouse, utilizing silicon nanowires embedded in a pad that sits underneath your laptop, a thermoelectric converter, and an induction coil inside the mouse to transfer power up from the pad. The mouse itself has a touchscreen scroller and a bluetooth interface, and the pad rolls up for easy portability.” It sounds way too complicated to ever be mass produced, but who knows.

via ohgizmo.com