Although adults may only think of monsters around Halloween, they're a fun theme for kids' parties year-round. Let the kids decorate their own cupcakes.
Tint half of the vanilla frosting with green paste food coloring. Frost the top of one cupcake with some of the remaining vanilla frosting. Remove the paper from another cupcake. Frost the entire cupcake with green frosting. Press top of green frosted cupcake into the top of the other paper-lined cupcake, leaving a gap in front. Place candy corn in the gap to form teeth.
Decorate cupcakes with small candies, string licorice, fruit leather, and gel frosting to complete the monster's face.
Store decorated cupcakes in airtight container up to 1 day.