I made these cookies last night for a Halloween party/potluck. I had these gummy eyeballs that were completely round. I cut off the bottoms so they would lie flat on the cookie. Then I baked regular sugar cookies. When the cookies came out of the oven, I placed the eyeball on top of the warm cookie. The gummy stuff melted a bit on the cookie which made it look cool and helped attach itself. These were quite a hit with the kids and moms.