Put a photo of your greatest cake creations on your car magnets. Whenever you drive, people will see your wonderful work and take note. Book more weddings and special occasions with this simple and inexpensive advertising trick. Multi-layer cakes, full sheet cakes, cupcakes, buttercream frosting, fondant, and more. Warm up the oven because you'll be getting lots more work when you slap a pair of magnetic signs on your vehicle.