Aside from the occasional trackball, almost every desktop computer has a mouse connected to it. However, the mouse has not always been the most common pointing device, and it has gone through many changes during its nearly thirty-year history. The mouse will be around for some time to come, although computer interaction technology is continually changing. For example, the pen and tablet combo offers the added benefit of allowing you to draw and write by moving your fingers on the screen, and maybe in the near or remote future by moving your eye. This would be a fun development for someone watching an office full of people wiggling their fingers or winking at their computer screens. Now look at the next 15 very creative computer mice!