Prepare cupcakes and frosting. Transfer frosting to large piping bags fitted with decorative tips and twist ends, sealing with elastics so they are secure.
8-10 unfrosted chocolate cupcakes, 8-10 unfrosted vanilla cupcakes, 8-10 unfrosted mini chocolate cupcakes, 8-10 unfrosted mini vanilla cupcakes, 2 batches vanilla buttercream frosting, 1 batch chocolate buttercream frosting
Fill small bowls, jars, or measuring cups with chocolate candies, mini chocolate chips, candy corn, sprinkles, sparkling sugar, and candy eyes. Arrange in the center of the board, along with bags of frosting.
1 cup chocolate chips, 1 cup candy corn, 1/2 cup orange and black Halloween sprinkles, 1/2 cup green or purple Halloween sprinkles, 1/3 cup orange sparkling sugar, 1/3 cup candy eyes