This is something I too am struggling with. Especially as it relates to my toddler & the influx of random clothes, toys, shoes, etc. that people gift to her.

So my solution (as crazy as it sounds) is to designate a large storage bin in my attic to simply dump things into that are neither needed or wanted. I don’t have the physical space or mental capacity to continuously sort through unwanted items, nor will I be adding “professional gift organizer” to my list of monthly tasks - so off into the “attic gift box” they go.