See the Germs! Glitter mixed with hand sanitizer. Teacher uses it, pretends to cough, and then shakes hands with 1 student. The students then shake each others hands and see how the glitter "germs" spread. Discuss proper hand washing after.
SUPER COOL site that shows images of kids going to school around the world. (it's not in english but I just like the pictures for multicultural/world views) Pinned image is of Inuit boy attending traditional school near Arctic circle.