Bake the cake in a Pyrex Bowl.
Color Cream Cheese Icing with red & yellow food coloring and ice.
Pipe with a very small tube of black ready-made icing (simple plus sign, then add two arched lines)
Add any appropriate "Team" letter in the right color (child's initial, your child's basketball team letter, their favorite pro team letter, etc.) I again used a small tube of red ready-made icing.
I could not believe how cute it turned out for something so simple.