:: Commodore C64 Modifications ::
http://www.bigmech.com/misc/c64mods/index.html
"In early June, 2006 Prophet64 made the bold move of releasing its SID music software on C64 cartridges. This completed the transition of the C64 from a computer system dependant on floppy and/or tape drives, to an independent piece of pro audio studio equipment. Could the union of Prophet64 with the C64 as a musical instrument be further improved upon? I thought so. The following pages explain what I have done."
YouTube - Circuit bent mechanical furby sequencer - The Furby Gurdy!
http://www.youtube.com/watch?eurl=http://www.ectomo.com/index.php/2008/02/29/the-bent-furby-hell-chorale/&v=sVBfF_wppWs
"Each furby has 4 controls: mute, crash, loop and reset. The handle turns 8 cams which operate corresponding microswitches to create interesting rhythmic patterns."