Use Your Assistants
If you have volunteers to assist you at practice, you can easily put them to work by giving them a group of players and a selected drill. You can then rotate players through various stations so that each player is getting frequent repetitions and more individualized attention.
Rotate Players
Remember to work with all your players. Move them around to different positions within each drill. Drills that require some players to be baserunners and some to be fielders can be enhanced by letting runners rotate out to the field and vice-versa.
Pre-Plan
We know everyone one of you is busy with a daily life so, pre-plan practices whenever possible. If you can organize goals and drills ahead of time, it will help you to meet your team's goals and make practice run a whole lot more smoothly.
Have Fun
Have fun but take it seriously. It's a fine line to walk. Your primary goal at each practice is to ensure that every player improves in some way. However, the most important goal for the season should be that no matter what, every player wants to come back and play again next season.