My daughter is a student at UofM, and loves anything Michigan, so naturally, I made her a MI themed gumball machine cake. It was all chocolate cake. I used 2 8″ layers, 1,6″ layer,and 1,4″ layer. I filled and stacked the cakes, then carved to the shape that I liked, before frosting and covering with fondant. I then inserted my straws, before placing the gum filled bowl on top. I also  made a lid and all other accents out of fondant.