For our second March birthday, we made a race car cake:

The headlights are malted milkball candies, the front bumper is a licorice Twizzler, the front wheels are chocolate covered cookies, the windshield is a Hershey's bar, the antenna is a thin pretzel, the back wheels are chocolate covered doughnuts, the brake lights are cherry Dum-Dums with their handles sunk into the cake, the exhaust pipe is another Twizzler, and the spoiler is a frosted graham cracker supported by wafer cookies.

I record it here for posterity, because the cake itself is already gone, down the gullets of a couple of dozen six-year-olds.