This is a riff on the other thread about what useless cookware item do you own.
I don’t have that thing you use to cut the foil wrapping that seals the top of a bottle of wine or olive oil. (Foil cutter? Is that its name?) I struggle with knife points, the tip of the corkscrew, my fingernails. I am 100 percent certain I could buy one very easily and cheaply, and I have no idea why I don’t. I could use one most every day of the week.