I have a MacBook Pro circa January 2007 that has a completely shot battery. In addition, the SuperDrive likes to be a big ole bitch and refuse to work on a whim. However, it is otherwise a very functional and passable "laptop," as long as you're close to an outlet.
Additionally, I've got a Mac Mini circa 2005 that is nearly impossibly slow that also functions.
Either way, if either of those options sound interesting, I'd be happy to clean one or both of them up and ship them away from my house. Send me an email.