There's an ancient - thousand plus years old - Chinese tradition of lifting, swinging and throwing/catching heavy stones with handles called stone locks (ishi-sashi, shisuo). These weights look similar to modern day kettlebells or dumbbells. These single grip handle medicine balls might work. Take a look at some video demonstrations.
There's also a Japanese form of body training called Hojo Undo that looks like something you could do with a steel club, meel, RMT Club, or bulava. Maybe also called chi ishi in Goju-Ryu karate? I'm not sure. See below.