I use clear shoe box size storage containers from the dollar store for each project. After 10 years of quilting I had lost track of all of my UFOs, so I bought the containers, cleaned up my sewing room & made a spread sheet in order of priority. (I had 37 UFOs at that point.) I was able to finish 17 quilts in one year, so I've kept it up. I don't let myself buy any fabric for a new project until I finish two on my list. It's like a part time job, but it's much more fun than my real job!