This is the cake I've been working on for a 1st birthday party today. It's a 6" strawberry cake, 8" yellow butter cake and 10" chocolate cake. The 6" smash cake is chocolate also. All vanilla buttercream frosting with fondant and gumpaste decorations. The dump truck is made from Rice Krispie Treats and then covered in fondant. Entirely edible. See inspiration cake here: www.flickr.com/photos/34259685@N08/3184049198/ They loved it!