After reading this, I've decided to get rid of the small table in my sewing room (which has some stuff under it, and upcoming projects piled on top) and put a pile of totes there. They can hold my UFO's. I'll keep each project together in a large plastic bag (not sealed) in those totes so that when I come back to work on it, the fabric needed is right there and has not been used for another project, or somewhere else so I have to spend a lot of time finding it again.
I have to keep certain projects (and the materials that go with them) together for teaching classes.
I also have a list of "projects-in-waiting" hanging on my curtain. It's easy to see there, and I can tell what I have that I might work on next.