When it comes time to decorate your cookies, a good rule of thumb is if it’s edible (and will stay on the cookie), you can use it. While some people like nuts or fruits, such as cherries, you can also use sprinkles, chocolate or butterscotch chips, sugared flowers, royal icing, jelly, dragées, coconut, colored sugar, fondant, or marshmallows. If children are going to decorate the cookies, one fun option is to use food coloring markers. Kids can use them like real markers or crayons and draw their own designs on the royal icing.