It’s an old coffee can full of tiny screws. The ones on top appear to be #3-56 (fine thread) in stainless steel, though the variety beneath is diverse. All in all, weighing in at approximately 3,063g. Individual screws weigh in – from a coarse sample – between 0.11g and 0.67g each.
Not going to throw them out, but just as unlikely to know when they might ever be put to use. Or how, precisely, we’d expect to find the necessary screws buried in such a mass.
Just, please, don’t drop it on the floor.