Beat butter until creamy, about 2 min. Add sugar 1/2 cup at a time, mixing well. Add salt and bet in vanilla extract; stir until smooth. Frost cupcakes.
Cut round slices from gumdrops about 1/8 inch thick and center on frosted cupcakes sugar-side down. Top each gumdrop with a candy-coated chocolate piece. For lashes, cut licorice laces in 1/2-inch pieces on an angle and add to cupcakes. To make bloodshot eyes, dip a toothpick into food coloring and draw squiggly lines through frosting or pipe with decorating gel.