I saw this cool use for a wiimote so I borrowed one from one of my students to see if it would work, and what do you know it did. The hardest thing was making the infrared LED pen. It was fun to go to Radio Shack and get to dig through the drawers of components. I bought a switch, the light, and a battery case and put it all into the body of a plastic pen.
Check out my very poor quality video below and also be sure to check out Johnny Chung Lee’s page for some better video and the programs if you want to do this yourself.