Mark-
Small amounts of copper, diecast, aluminum, and brass can all be acquired from telephone handsets, but the real target is the nice gold plated parts already mentioned.
I personally make it my mission to recycle as many components as possible when scrapping electronics for the gold scrap. It all adds up, and scrap yards will pay you cash for your efforts. Even insulated copper wire is recyclable as is, and is currently bringing about $1.00/pound. Think of all the easy sources of scrap wire we have when recycling the things we do. It all adds up!
Happy hunting.....
Fever