The Acme International cherry pitter. This is the grand total of cherries I was able to pit before it broke: yup, 13. A baker's dozen. Not nearly enough for the cherry pie I was planning. Even though it's only $5, save your money. That cost me 38 1/2 cent per cherry folks, not counting the original cost of the actual cherries!
Seriously though, I should have known better, right?