Skiman
Super Freak
I used to collect matchbooks from restaurants or bars I ate at, but these are hard to get now since most places don't have them any more.
I've since moved on to collecting bottle caps from each unique beer I've had. I haven't counted in awhile, but I think I have over 150. I need to dig them out from my recent move and try to take a picture of them. I haven't thought of a way to display them yet either.
Now you need to collect all the different protein labels from containers that you have taken.