Preheat oven to 350. In large bowl, combine first 4 ingredients according to cake mix package directions. Fill each cone with about 2.5 tablespoon of batter. Place cones about 8 cm apart on an ungreased baking sheet. Bake 25 to 30 minutes. Cool completely. For icing, beat all ingredients together in large bowl until smooth. Ice each cupcake with about 1 tablespoon icing. Before icing hardens decorate with candy and/or sprinkles. Store in airtight container.