All the structures below are made of pvc pipe and pvc connectors so the servo leads can be run through them. The arduinos and battery boxes that run the servos are eitiher located under the cake board or mounted inside the structure and sealed so no food touches them. All heads, claws, paws, etc. are printed on my 3d printer that uses foodsafe PLA. Cakes that lie flat or standing are made the same way.