(fake) Credit Card Collecting

My boyfriend likes to collect those fake credit cards you get in the mail.  He has 32 of them.  When I spread them out, they take up half of our coffee table.

I've been trying to collect umbrellas, but every time I get a new one, the old one gets destroyed by an evil rain storm.  So right now I have a collection of ONE umbrella. 

Do you have anything unusual that you collect?  Please tell me about it in the comments section.