Atlanta Mom asked what I used to make my heart pancakes yesterday. I have these heart molds, which handily enough can be used for eggs as well as pancake batter. You can order them from Amazon.
Before you use them, spray them well with cooking spray. I am a total sucker for kitchen tools of all kinds, but these are particularly fun. I'm currently on the hunt for a shamrock for St. Patrick's Day - if any of you come across one, let me know! (I have learned the hard way - cookie cutters are no substitute for proper pancake molds, because there's no little cork-covered handle that allows you to pick them up in order to flip the pancake.)