Aut cum scuto aut in scuto
A yoyo for the bionic man.
Broomhandle, meet rope.
Years ago I had a friend who did exactly that, and had incredible forearms due to it. Never had the patience for that myself, but the results are impressive!
"First comes right, then comes fast. Again, Hannie, again!"
Years ago we did the same thing with a stick, a piece of rope, and a coffee can full of cement, or dirt, or whatever you could find....