I also like things cheap.
So I hied on over to Fragers Hardware, most fabulous hardware store in the US, and started piecing together copper pipes, elbow joints etc. Then a nice lady found me a lamp kit and I searched and searched and finally found a silver-tipped lightbulb -- necessary so as to avoid blinding.
(yay I'm back!)
(I got the copper to tarnish/go verdigris with a mix of salt and vinegar. didn't take but an hour or so to turn green)