Does anyone have a parent who is a hoarder?

we're no where close to full on hoarder - but i am in the process of helping my parents downsize to move them into assisted living and it ain't fun
just took a bunch of books to a used bookstore/buyback place - and he comes back with more books
granted it was something like a 30 v 4 swap, and i'm trying to let dad have some "wins"
but jeez