I have a closet full of 'em, including a 350, 450, 180, SLR 690, and all the backs for 4x5 Graphic cameras, plus lots of non-working and roll film models.
But the one which is real fun is the "BIG SHOT." Uses pack film and flash cubes, has a single element 220mm lens fixed focus for close-up portraits. Don't know what happened to mine, and the one I bought on ebay came in pieces because they just threw it into the box without any packing!