I took part in the Scrapyard Challenge workshop at SangSangMadang Gallery held in Seoul on November 27, 28 & 29, 2008.
The Scrapyard Challenge Workshops are intensive workshops where participants build simple electronic projects (both digital and analog inputs) out of found or discarded "junk" (old electronics, clothing, furniture, outdated computer equipment, appliances, turntables, monitors, gadgets, etc..)
The MIDI Scrapyard version includes a mini workshop where participants build simple drawing robots or "DrawBots" with small, inexpensive motors, batteries, and drawing markers that can also be connected to Serial or MIDI interface. You can see my 'drawbot' in the photo below:
I called it a 'cowbot' because it was made out of a plastic milk bottle!
There is a video of the drawbot in action below: