I wouldn't call it collections, rather stuff I might regret throwing out yet. As for real mess outside the drawers, cabinets and other storage spaces, if it's something you use daily, I don't think it's clutter. If you don't, better put it away to some cabinet so it won't take up space, stay in the way and collect dust.
It depends on how you display it. Some people put collections in display cases, nice shelves etc...then there's people who collect things and it looks like hoarding.
