My nephew, Clayton, turned 6 years old last week. His theme for his party was Monter Truck Sandbox. All his friends got to play with monster trucks in his sandbox and they had a great time. I made the cake for his party. The bottom layer is 12 inches round. I used black fondant to make it look like a monster truck tire. The top layer is 8 inches and I tried to make that look like his sandbox with crushed up nilla wafers. The party was alot of fun and I can't believe Clayton is already 6!