These are cupcakes I made for my godson's birthday party. They were yellow cake with white chocolate buttercream frosting. The boy's mother and I decorated them.
The baseballs are decorated with red pull and peel Twizzlers, the soccer balls with dark brown M & Ms and black decorating gel, the basketballs are orange-dyed frosting (done after refrigerating to add texture) with chocolate Twizzlers and the tennis balls were yellow-dyed frosting topped with white frosting and sprinkled with sanding sugar to create a fuzzy look.
The cake was from a brick and mortar bakery. Heavy frosting over chocolate cake. I think the football was entirely made of frosting.