I just want to say that this might be the coolest thing I've ever stumbled upon while surfing the net. Hands down, by far, the best. Subsequently, it would be downright immoral for me not to share it with you:
Someone (found by this person) actually figured out how to knit a dissecting rat and frog. I'm sorry - I just couldn't help myself. I officially need to learn to knit, so I can make a pair of my own. Get the pattern for the rat or frog and make your own! Or if you're lazy, buy them. I think they'd make a great gift - especially if I'm on your Christmas list.