Forget about the vegetarian because nearly all vegetarians use some kind of animal products. They just don't eat it. Ask them if they are vegan. These guys are the real hard core "I won't use anything that uses animals" people.

Most folks would be really surprised at what products actually use animal products. Like their make up that they use every day to look pretty.

Here is a short list of some products that use animal by-products.

anything made of plastic like combs, brushes, tooth brushes, the computer we and they are typing on, etc....
tooth paste
heart valves that save lives, a majority of them come from pigs
shirt buttons
shoes
ice cream
yogurt
chewing gum
marshmellows
drugs (the legal kind)
cosmetics
lotion
candles
walpaper
glues
glass
car tires
antifreeze
oil
paint
dog and cat food

I'll see if I can find some more later.