I have a project that I am working on with a friend and we want to build a very small form factor box that we could maybe get linux on. I am looking for a low power CPU, which could prefferably be passively cooled and most importantly, extremely cheap. I figured a cheap board with an embedded processor(maybe a C3 or something similar) would suffice. I'd prefer to go this route than try to build something completely custom, and x86 or powerPC would be a plus as I would like to do as little coding as possible. I already tried looking for something like this on google, but I haven't really seen anything yet. Anyone know of any products like this?