T-Ball Throwing Drill
Give your players a target. When there’s something to throw the ball at, they tend to try harder.
The one lesson I did get to stick was: when throwing, step with the glove-side foot. Trying to step with the throwing-hand side leaves them off balance. Step with the glove side foot, good balance, a much better throw. And “glove side foot” is easy to understand even for kids who don’t really get “right” and “left” yet.