I have a closet in my sewing room and I took all my UFO's and WIP's and put each in a bag and hung it on a hanger in the closet, so they are at least in sight.
I also went through and put together a package of all my extra and/or have-been-replaced stuff and I'm going to put it on the neighbourhood Freecycle. A cutting mat, Olfa cutter that I've switched to a different style of, older QIAD 6x24 ruler, a box of pins, some misc notions.....someone will be glad to get it and I'll be glad to get it gone.
Also.... Just Get It Done Quilts has a 30 Day De-Clutter Challenge going on that might be of interest to some.
De-clutter Challenge
Watson