A low poly floppa, but now 100% more floppier! 

This uses the springs and base plates of 3D Printy's springs and base plates. I included them in this model for the sake of convenience. 

You will of course at least need supports on the head, though the rest of it is up to you if you want to support it or not. I would also recommend using less infill than normal, since it sticks out pretty far. Too much weight will probably make it less jiggly.