Some of those drills took some thought, RJM.
I started playing ball in Belgium. Belgium has trees so my dad hung a Michelin bicycle tire from a tree and I threw the one baseball we had through the tire. Then I lost the ball. Option became tennis balls which Belgium also has. Also, like RJM and probably everyone else who picked up a mitt, I did the wall drill, over and over and over. I can still remember the sound. Belgium has walls but the ball bouncing off the wall sounds different there. They sound like a snooty French waiter.