A couple weeks ago, I made this "Drawing Bot" for Interactive and Multimedia Art. I was feeling in the mood to make a video of it. Take a watch if you'd like.
I wanted this project to have an uncontrollable erasing component, so I programmed a bunch of metro objects with random numbers to draw partial circles over more circles to act as an eraser. I also wanted the shapes of the mouse drawing to change, so I made all the LCD's have different marks and colors. It's cool and fun for a sec.. kind of like Smash Mouth.