To make the tiny king cakes, put about ¼ cup of frosting into 3 bowls. Add green food coloring to one bowl, purple to another, and yellow to the last. Mix until you get your desired color.

For each king cake, take a vanilla wafer and frost a small section with each color. Top with clear sprinkles and a plastic baby if desired.

Frost the cupcakes as normal and top with a tiny king cake.