Those are super - I'll be keeping my eyes open outside the computer store for sure. I passed up a couple because obviously they came from a REALLY big flat screen tv, and were long and skinny, but thinking about it now, I could have cut them up and re-glued them. The cogs are turning now!
I've made a tutorial for the real thing (sorry, I know, off topic) here:
http://www.bluefoxfarm.com/hyp... just for fun.