I did not know it was possible to break those things to be honest. We made a circle with a string or something, and then let the two spinning tops (as we called

I did not know it was possible to break those things to be honest. We made a circle with a string or something, and then let the two spinning tops (as we called them) duke it out, and the loser is the one knocked out of the ring. Ours were made from a very tough plastic, either nylon or HDPE.