a word to describe items or objects around the house/apartment that would be useful if only one can find it when in need
Roommate 1: "I found an unused, extra toothbrush!"
Roommate 2: "Keep it for drunk guests who can't find their toothbrush during State Patty's weekend."
Roommate 1: "It's one of those things that would be useful if only you can find it when you need it."
Roommate 2: "Yep, it's one of those usefulless stuff..."