What do you wrap your pins with?
Thanks for all the responses! But what I really meant was, what do you wrap your pins with inside your books?
Every pin I have in a pin trading book off its card is in one of these http://www.jewelrysupply.com/Ultra-Clear-Bags--Lip-Tape_c_3465.html .
Now, these are a bit thinner than the ones typically used with baseball cards, but that is OK because they are only going to be used once and their purpose if to keep the pin completely covered but viewable. I like these because they come in a variety of sizes.
The flesh of my enemies.