Here is my very first cake with moving parts. The moving element is a fan on the inside that is battery operated. My dad helped with the re-wiring of a spray bottle fan which was used as the moving fan. I made this cake for a heating and cooling company who is celebrating their 1st year of business. The cake is chocolate with buttercream frosting. The sides were air brushed to look like the coolant tubes, and the sign on the front was hand-painted to look like the company logo.