Making this mouse is very easy: a light sensor detects the shadow of hand on the mouse and activates a timer that turns on a motor for about a second and the motor makes mouse running.
If you want to make your own mouse read the rest of this instructable.
Step 1: Things You Need
-Printed Circuit (Find files on next step)
-47uF Electrolyte Capacitor
-Circuit Boards Acid
To make the mouse you need the followings:
-Old Computer Mouse
-4 AA Batteries
-A piece of Rubber Tube
-0.1uF Ceramic Capacitor (104)