What's a punch card?

You can get free stuff at CAKE 2017 just for buying comics! What?!It's true! When you get your program from the info booth upon entering, there will be a detachable punch card. When you buy something from an artist, have them write down their name and the price of what you bought. The more stuff you buy, the more free things you get.$15-25: A show poster and a set of CAKE buttons!$26-65: A show poster, a set of buttons, and a set of stickers!$66+: Receive everything, plus a limited edition risograph print by BEN PASSMORE, printed by Perfectly Acceptable Press!