You saw what happened in my kids' playroom the last time I deep cleaned it, now you can see what I took out of my basement. My basement functions as a large playspace and playroom and it often gets out of control. I don't bother to clean it often because I don't go down there very very much.
A while back I rearranged my bookshelves, straightened up the books, and rearranged the toy shelves.
Consequently I found a lot of books, toys, and dress up clothes that I didn't want to keep.
Unfortunately I didn't take photos of all the stuff spread out, so the only photos I have are the following: the first is my donation pile and the second is my trash bag.
It was altogether a very satisfying endeavor. Because I have no idea how many things I got rid of, I'm just going to give a low estimate of 30.