Came across this list in my wife's office. Craig and I have pinky sworn to abide by these rules. :-)
Ten Things to Do Instead of Hitting
1. Talk about your feelings with a grown-up you trust.
2. Sit alone.
3. Count to ten slowly.
4. Draw a picture.
5. Jump up and down or exercise.
6. Read a book.
7. Write a story about how you feel.
8. Get a drink of water.
9. Squish clay or play dough.
10. Take a deep breath, hold it for a few seconds, relax, and repeat.