When my son was four, everything was Little Einsteins, so he naturally wanted his cake to be as well. This is Rocket, flying through the sky. I used 2 of Wilton's oval pans (the smallest and next to the largest) for the body and top of Rocket, which I stacked and then shaved away the top oval until it had the right curvature. The engines and fins on the sides are shaped from a Sara Lee pound cake. Those cakes have a great, solid texture that's perfect when you need to sculpt a special shape. Since they come frozen, you can start cutting them right out of the freezer. Wooden skewers hold the fins and the engines in place.