I have done Halloween themed mini cupcakes. They asked for 3 flavors. Red velvet with cream cheese frosting, pumpkin spice with cream cheese frosting, and a vanilla chiffon with vanilla buttercream. I have added edible sprinkles on top of each flavor.
First: Pumpkin Spice mini cupcake with cream cheese buttercream frosting
Second: Red Velvet mini cupcake with cream cheese buttercream
Third: Vanilla Chiffon mini cupcake with vanilla buttercream frosting
Halloween Triplet Mini Cupcakes