I once had a mouse mat with Albert Einstein on it.
From the guardian.co.uk
Now gadget-maker A4 Tech of Taiwan has developed a cordless mouse that takes its power from the mouse mat, which is plugged into the PC's USB port.
From the newscientist.com
Back in May, Feedback received, unsolicited, a natty Greenpeace mouse mat made of Amazon-rainforest rubber and carrying a picture of a parrot in flight.
From the newscientist.com
For comparison, the working surface of desktop touchpad to a mouse and mat.
From the en.wikipedia.org
Instead of each device needing its own charger, it may soon be possible to recharge phones and cameras by placing them on a plastic pad the size of a mouse mat.
From the newscientist.com
The plastic mouse mat is embedded with a network of hundreds of radio antennas, which induce electric currents in a coil inside the mouse, providing it with electricity.
From the newscientist.com
The mouse monitors the user's clicks and scrolling, and shines an LED down onto the mat, where a pattern allows it to work out its position.
From the newscientist.com
Once the mouse knows where it is, it sends position and clicking information by radio signal to the mat, which in turn transmits the data to the computer.