If you've ever wanted to make vomit, farts and poo outside your own body, Horrible Science had a Disgusting Digestion kit that allows you to recreate the body's nastiest fluids. Sadly, it seems this gross approach to anatomy didn't exactly take off as it has been discontinued, but we're grateful the Horrible Science books by author Nick Arnold, with titles like Bulging Brains and Blood, Bones and Body Bits, still exist!