Unknown Sport, "Clank Ball"

I've been trying to come up with a sport for the Any How Town series, something that is like hockey or football but I'm having a hard time doing it. I thought building this model would help get me started. It did not, but it did make me smile. The only note I have says, "Clank Ball" and that really is of no use.
A.Shay Hahn
madcraftshoppe@live.com