The Ur.Frog wrist rest is made of silicone and features built-in LEDs that will make the frog glow in the dark when it’s connected to a USB port.
The other part of the USB connection is that you can use the frog for various interactive games, where you will have to hit the poor little thing to catch flies and so on. Catching a fly will also make the LED lights twinkle.
Read more about the Ur.Frog at USB Relax. No word on pricing.