Last month, we were in New York visiting our daughter and her husband who live in Manhattan. We went to Momofuku Milk Bar. I was impressed that every cookie they had on display I had made myself, including Cornflake Chocolate Chip and Marshmellow, Blueberries and Cream, Compost and Corn. I also made their decadent crack pie, which was also for sale. These people really make unusual and interesting cookies. If you are interested in such things, Google their recipes and have fun!
http://milkbarstore.com/main/press/recipes-and-how-tos/