Fill a zip top bag with icing. Snip a small corner of the bag to make a piping bag.
Place the styrofoam cone on a plate and frost with icing. Starting at the base and working up, secure mini doughnuts to the cone with toothpicks. Using the piping bag fill in the gaps between doughnuts with icing.
In the larger gaps between the doughnuts, place candy mint leaves secured with toothpicks and blue jelly beans.