Sheck spinners always had a flag or a shrimech on top and has 2 or more motors aligned like this,O=O. My idea is to create a motor specifically made for shell spinners where the multiple motors rotate as one component to spin the shell to look like the motors are spinning the edges like in RL. And to fit the edge spinning motors, there will be a shell disk with a hole in the middle so you may fit a static structure to self right. This would be a cool real life addition to DSL.