One type of cookie that my sister and I liked making when we were kids was a stained glass window cookie. Using a sugar cookie dough, you cut shapes with holes in the center, then dropped colored sugar in the holes when the cookies were on the baking sheet. The colored sugar melts when baking and makes a "stained glass" in the center. They were very cool looking (especially when we got creative and made shapes like peace signs.) Trouble was, no one really wanted to eat them, and if anyone did, they would have to break the cookie away from the stained glass parts, which was usually thrown away. I guess they are probably only meant for display, like gingerbread houses...