Trypticon

Fans of Transformers will like this one. It's a computer mouse that can transform into a Trypticon (some kind of robotic dinosaur). It's not wireless though so you would have to try and transform this thing while it's connected to the computer or you will have to unplug the mouse. You can buy one here if you want to try it out.

http://www.bigbadtoystore.com/bbts/product.aspx?product=TAK10925&mode=retail&picture=out