Allow infielders to work on developing soft hands when catching the ball
Take a raw egg and have myself and another coach stand about 5-10 feet apart.
As I toss the egg to my coach, I show them that in order for him to catch the egg without breaking that he must have soft hands and catch it gently while at the same time he must sweep the egg in his hands into his belly. The same as pulling the glove up from a grounder and sweeping the glove up into your belly before throwing. To make my point even further, I make sure an egg breaks on me as i catch it showing how "hard hands" and "stiff arms" are the improper way to receive an egg/ball.
I've only had one egg break in 2 years with these boys. During practices and games i will tell remind them "to get set and have egg hands". They know exactly what I mean and it's worked beautifuly for me over the years. It has made my teams be very aware of how important it is to be relaxed, soften their hands and pull their glove into their belly before throwing.