(via) Giant Microbes is a company that make stuffed animals that look like tiny microbes:
Now available: The Common Cold, The Flu, Sore Throat, Stomach Ache, Cough, Ear Ache, Bad Breath, Kissing Disease, Athlete's Foot, Ulcer, Martian Life, Beer & Bread, Black Death, Ebola, Flesh Eating, Sleeping Sickness, Dust Mite, Bed Bug, and Bookworm (and in our Professional line: H.I.V. and Hepatitis).
Each 5-to-7 inch doll is accompanied by an image of the real microbe it represents, as well as information about the microbe.
They make great learning tools for parents and educators, as well as amusing gifts for anyone with a sense of humor!
I am not sure whether the lat sentence is really true but... the ulcer and the stomach ache are quite good: