Home » R2-D2 » Marvelous R2-D2 Birthday Cake Marvelous R2-D2 Birthday Cake November 18, 2012 R2-D2 Star Wars This Marvelous R2-D2 Birthday Cake was made by Cake Central Member eeeason. This Star Wars Cake was made using a stacked cake for R2-D2’s body and Rice Krispies Treats for the arms. This cake was almost 2 feet tall.