Wow, dozens of correct answers. One of the reasons there was so many is mentioned by the final correct answer winner on this list!

Cherry/olive pitter. Keith Phillip

Cherry pitter. Some descriptions also say olive pitter. Brandon Hanke

Individual olive de pitter invented by the famous dentist Dr, Ibroka Tooth. Mr Tom

This is a cherry/olive pitter. -Chris Durkin

Hand-held device to remove pits from olives, cherries, and dates. Daniel Mottola 

Google made it too easy to learn this is a Cherry/Olive Pitter. “emenemenee”

Should you want to buy one it’s here: https://amzn.to/3nhhkoO (Was $8.99 as on 5/1/23, but price can change at any time.)

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See instructions below ‘Cute, Clever, Could be’ answers below on how to get your prize.