Cute idea for a kiddo's cake. Or an adult that enjoys him/herself a dumptruck + chocolate + cake + peanut butter surprise! Never enough cool boy cake ideas heck even a grown man would get a kick out of this!
Bake and ice a round cake, making sure its shorter than a Kit-Kat bar. Break 4 packs of Kit-Kats into two bar segments. Surround the cake with the Kit-Kats and then tie with a ribbon. Fill the top with a large bag of M's.