The mouses are not in any particular order.
This mouse was first introduced at the Taitronics in Bangkok in 2007. It combines a mouse and a number pad, just flip the outer case open for a number pad, or close it for a mouse. It is pretty useful for laptops.
This mouse is controlled by an optical sensor, which allows it to be used in mid-air.
This mouse operates exactly like a normal mouse, except it was made from an old Nintendo controller. In other words, it looks cool.
This mouse isn't for your hands; it's for your feet. You put your feet on them, press down to click, and move around to move your cursor. By the way, the feet mouse are $316, which most people would call a rip-off.
The gun mouse is an alternative to the average mouse. I think it just is a gun on a computer mouse since the site didn't state exactly how it worked. It would be cool if it worked like a Wii Remote though.
