1. Use icing to attach Mike and Ike candies or M&M's to cake bottoms for feet.
2. Stick M&M's Minis to critters' backs. Make horns with candy corn and eyes with M&M's or Mentos. Pipe or attach M&M's Minis to make pupils.
3. Cut Fruit Roll-Up into tongue shapes; attach to cakes. Pipe teeth.