RUBBER DUCKY BATHTUB CAKE - Bake 2 rectangle sheet cakes. Cut out center of one cake leaving a 3" rim and freeze. Frost uncut cake. Place frozen cake on top of frosted cake and frost together to create the "bathtub." Fill center with "water" made from vanilla pudding tinted blue with food coloring. Or make blue Jell-O in pan using an extra envelope of gelatin, so it will hold together. When set, scoop into "bathtub. Top with bath toys.