When coaching baseball, one of the major components of a player’s value to the teams success is his ability to play catch. I've never see a practice where players didn't play catch as part of the warm up process. The problem is that you rarely see players, as they warm up, emphasize the fundamentals of step catch and step throw with the competitive precision needed in the game. It is important when coaching baseball that you pay attention to this phase of practice and insist that the time is well spent.
There are more drills and suggestions in the iBook, Practice Baseball to Win.