Guitar Pick

What do you do with those plastic fake credit cards that you get with all the credit card offers you get in the mail? I use to give them to my kids to play with as pretend credit cards but then after thinking about the financial problems many Americans have with credit cards I thought I better stop. Don't want to create credit card issues in a 2 and 4 year old. :)
I get so many of these fake credit cards and I've been racking my brain trying to figure out what crafty thing I can do with them.
This is the first thing I made: Guitar Picks!All I did was trace a guitar pick on the plastic credit card. Cut it out and sand down all the sides till they are smooth.
Send a bunch to your environmental, guitar strumming pal for the holidays.