What?
If you are the artsy-crafty sort then you know that an open crop is when you get together with friends to work on your scrapbook creations. Different craft stores feature open crop sessions for a fee. They let you use their cropping tools so that you don't have to go out and buy each and every tool yourself. I usually make scrapbooks of personal friends' weddings. It is a priceless keepsake that they can keep and reminds them of their special day.