This is a cake that I made for my nephew's 16th birthday party. He loves playing his guitar and loved the cake. The body of the guitar is made from devil's food cake, buttercream frosting, and MMF on the top only. The neck was sculpted out of marshmallow cereal treats. The strings were a food-safe wire. The frets and tuning keys were made of MMF. I put the tuning keys in with toothpicks so they actually turned. I was very happy with how it came out. It was the same size as a standard youth guitar.