One thing I've done is I've started a box for unwanted craft supplies. (Seriously, why did I buy a hot pink stamp pad? Or all that crochet thread from the thrift store-just because it was cheap?) That way maybe I can make a nice box for someone when there's another round of the Givers and Needers Swap. Or just have extras to tuck into swap packages, when I have supplies for crafts my partners can use. Not much in my box yet, because I haven't done much organizing, but it'll get there!
A box of the unwanted is a great to destash. But you must be strong and not pull things out of the box once you put them in there. Good luck with the organising.