This idea for a [tag]how to softball[/tag] running [tag]drill[/tag] was sent in by Keith.   It has become a personal favorite.How to Softball

My tip is:   Some of my less athletic kids never [tag]run[/tag] properly.   They run heel first, and standing straight up.   To show them how momentum can help them run faster, I have a [tag]softball[/tag] [tag]coach[/tag] put his hands on their shoulders and have them lean forward, when the coach lets them go, their weight pulls them forward.   When they lean more forward and run on their toes instead of their heels, they of course run a good bit faster.
Every year I get comments from parents of how much this has helped their child have more confidence in themselves and actually run faster.

Simple but very, very effective.