None: I do not buy utensils I do not need.
I have a few things I have rarely or never bothered to use, but they are not "useless". Most are simply duplicates of ones I do use.
Perhaps the only one of really limited practicality, given to me as a present, is a "travel kettle" used by plugging it into the car's 12V ("cigarette lighter") socket. I have never used it.
I do have milk in coffee, usually, but can't be bothered with all that froth nonsense. I want a mug of beverage, not bubbles!
.....
(Frothy drinks..... A legal oddity here. The "head" on a pint of ale cask-dispensed in a pub is different. Although still only froth, and Northern English drinkers swear blind it is necessary despite it arguably flattening the beer slightly, the amount of liquid below it still has to be a full half-pint or pint by law. Yet cafes are legally allowed to sell coffee short, disguised by opaque cups, thick layers of milk froth and pseudo-Italiano name.)
