I often find that when decluttering, it is beneficial to go back over the same space more than once. Things that you decide are keepers the first time often don't make the cut the second time.
This has been true for me often when I go through clothes. I also find it to be the case when I'm cleaning my sons' room. Even though it's the same room with the same things in it, I can find items to throw out each time I clean.
Somehow if I'm irritated at my kids, or if their room is especially messy, I get rid of more than if I were calmer.
So here's the moral of the story: Declutter when you're mad.
Several days ago, I cleaned and reorganized my little dudes' room. The gross things I uncovered in there made me angry. Consequently, I got rid of more many more books that I would have had I not found petrified cheese and banana peels under their bed.
43 books to be exact. I used my guidelines for book decluttering with a couple of addendums: a) if it makes noise, it is not a book we need, and b) if it features Barney, it is not welcome in my home anymore.
I also got rid of one book of diagrams of Lego structures. And one toy not shown here. Plus, I put a bunch of things in the garage to see if they'll notice that they're gone. If they don't, I'll donate them soon.
Total items: 45