Judd sent this one to me last week. A great example of a [tag]baseball pop up drill[/tag] that doesn’t require a coaching PhD to figure out. 
From Judd”¦
We usually finish off [tag]baseball[/tag] [tag]practice[/tag] with this one. It is designed to teach the players how to judge pop-ups and the proper way of letting every one know that you are going to “call” it. It’s called simply the [tag]pop-up[/tag] [tag]drill[/tag] (although my youngest daughter sometimes refers to it as the “pop-up of death” drill).
I have the whole team gather around me in a loose group-stretching their arms out so that they are at least arms length away from all the other players. I then randomly [tag]throw[/tag] the ball up in the air.
The players then have to decide if it is one that they can [tag]catch[/tag] and then “call for it”. They are awarded points for “calling” for the ball loudly, making the catch or stepping back to allow someone else who has called the ball to make the catch.
The first player to 10 points get to sit down. This continues with me alternating where I throw the ball until everyone has reached 10 points. The player who finishes last then has to run the bases while the rest of the team cheers loudly for him, and some times even chase him around the bases.
This teaches them to judge pop-ups, take [tag]control[/tag] of a fly ball, as well as avoid collisions with other fielders. My kids love this-especially the ritual of chasing the last one around the bases. Hope this will be helpful. So far I am really loving some of the [tag]drills[/tag] that I am seeing-especially the ones that become games and contests. I find that my players much prefer these kinds of drills.