This cake was an idea from the wife of my Bishop. He is diabetic and "shoots up" on insulin. So she thought it would be fun to have a syringe birthday cake. The syringe's main body is made up of 3- 6 inch circle cake that I cut in half. The plunger, I just frosted over styrofoam. The head is just a cupcake cut in half. Then used a large sucker stick as the needle.