Electronic Finger Counter, Resettable Hand Tally, 5 Digit Number and LCD Electronic Digital Display, Handheld Clicker Counting

That would work! And look at this one that came up as a recommendation under the one you have. It goes on your finger! Not sure who needs 7 packs and 10 packs of them, but that's how they're sold ... Edit to add link in case anyone wants to buy them