When I first saw 3D Printy's bobbleheads, my first thought was to attach multiple of them together. Thus, I made a few different adapters to stack multiple springs and bobbles on top of each other.
A base connector is placed on top of 3D Printy's Template Blank to allow for bobbleheads to be stacked on top of each other.
Please let me know if any other variation of the adapters would be helpful!
The author hasn't provided the model origin yet.