A simple way to add variety to your life, I made a batch of devil's food cupcakes and topped them with 4 different flavors of frosting. Only a little extra time for each frosting, but totally worth it to spice things up.
Flavors, clockwise, starting from front.
Flavor 1: Strawberry
Regular buttercream frosting, but with fresh strawberry puree instead of milk. I topped the cupcake with the frosting, then spotted it with a couple sesame seeds and mint leaves to make it look like a strawberry top. No food coloring was used, but it could be cute to make it a little richer in red color.
Flavor 2: Kahlua
Buttercream made with Kahlua instead of milk and topped with a sprinkling of cocoa powder.
Flavor 3: Grand Marnier
Buttercream made with Grand Marnier instead of milk. Should have added orange juice or rind to the frosting mix, because the Grand Marnier by itself wasn't quite cutting it. I did top it with candied orange rind pieces, but it didn't add enough flavor.
Flavor 4: Hazelnut
First I spread a little Nutella on the cupcake, then I put on a layer of Frangelico buttercream. Topped with a hazelnut.