Even though I have two cherry trees, I haven't invested in a cherry pitter. I actually got this tip from a cooking magazine (can't remember) but it's such a great tip, I want to share. Supplies: fresh cherries, paper clip, cookie sheet and bowl.
Step 1: make the pitter tool
Wash the paper clip. Open the paper clip. It doesn't matter if it's an 'S' shape or a 'C' shape.