A few years ago my dad bought a 35mm camera that took photos that you could send off to a processer and they sent back lenticular photos. It was basically a point and shoot with three or four lenses. We only got about five or six images out of the camera before it broke but they are pretty impressive. I thought I would like to take some pictures at faire with a camera like that but I don't know a good place to get one. More importantly I need a good processor.
I wasn't sure what that was, so I Googled it. There are actually tutorials on how to make lenticular images using any digital camera. Here's one (http://www.shortcourses.com/display/display3-7.html).
How interesting! Milord has a vintage Viewmaster camera, but there doesn't seem to be anywhere to buy film or processing for it, unfortunately.