Parts, it all begins with parts. Right now most of them come from eBay. Its amazing what's out there and what kind of stuff people are willing to buy (I know, I have spent good money on some pretty odd things, but you never know how it will all come together) Much of the stuff just sits in the Robotorium waiting to be needed. I have looked at some things for over a year before something clicks and it takes its place in a new creation. I swear thats half to fun of this. The process is a joy.