With enough money you could recreate the machines and such used to make them. Thinking about it then it might even be the cheaper part of the animation project as a whole. The animation process itself is not hard (you imprint aspects of the animation on celluloid and take pictures of a stack of them and then another moved a bit and then another after a bit more movement, more movement and background elements, more annoyances to keep track of) but it is tedious. If it has been gone for a while I don't know whether you could go drag someone out of a nursing home, or maybe there might be a guy in a museum or university somewhere (I was watching a TV show a while back and some guy that worked for a library I think it was was shown doing...