When your cleaning out closets, drawers, toys are etc...
I like to have three piles
1. keep it- (which pretty much goes back in it's spot)
2 throw away (broken, ripped, used undergarments- things of that nature that I do not want nor would someone else)
3 garage sale (if you like having garage sales or for those of you don't Good Will is another option)
One of my big rules is if I haven't used something with in the past three years then chances I won't use it so then off it goes to my garage sale pile.
One of my favorite things to "declutter" a room is have a bookcase with bins. It looks nice and hides the clutter of toys, books etc..