In one of those quirky, roundabout ways you have of finding sites on the internet comes American Science and Surplus, which has Anatomical Foam Fun:
Not just for toddlers anymore! While you can't start too young prepping for MCATs, our foam puzzles are must-haves for anyone planning a career as a gastroenterologist or orthopedic surgeon. You get (2) flexible, dense-foam puzzles in vivid colors, 11" x 6-1/4" x 5/16" thick. One is a 14-piece jigsaw of the digestive system, the other is a 21-piece skeleton model. Both have all the relevant parts labeled.
A bargain at $3.95 for two different puzzles. I'd show them but haven't figured out how to copy the image over.