Being an ex-Navy supply type, where keeping inventory in tiny spaces meant figuring out just how much of anything was required to be kept on hand... it was an ongoing struggle to not fall victim to the number one rule of Naval supply management.... "If it does not fit... force it!"  MarkS has it just about right, items that are "single point of failure"(from another thread) should be kept on hand(to a point, eg water pumps, water heater anodes, fuses, Lucky Mikes tinfoil hats etc). Bandaid type items(which I would include the foil tape), while useful should be kept only in sufficient quantity to make the temporary repair of a couple of items because storage space is at a premium on ships and RV's. I would lean toward not keeping it.

You could also use it to trade for something you need, again assuming you have the space for it in the first place.

FWIW