18 ga. speaker wire works well for me also. (Get some oxygen-free Monster cable for that nanosecond edge in your touch getting to the box.

)
If you have access to some ABS plastic bar stock, a drill, a milling machine, and lots of time on your hands, I suppose you could make the plugs as well. For French plugs you could dispense with the milling machine if you have the right size stock and don't mind them being square, or even more time on your hands and a file.
I suppose you could make them out of hardwood, too...actually that might look kind of retro cool, I'll have to think about that....
I don't think it's worth the like $5 for the plug and pins, since the pins are $5 by themselves bought separately, unless you go the wood route and use a nice rosewood or ironwood, and it impresses babes
