I second the tension rod motion! My UFOs are in a low two-shelf bookcase. I sewed a quick curtain with a rod pocket and slipped it on a tension rod. Just popped it inside the ends of the bookcase and made it long enough to cover both shelves. This serves two purposes: it keeps light and dust from the projects and (LOL) keeps me from having to look at them. I HAVE managed to complete some of the UFOs, but there always seem to be others to fill the shelves. At least I police myself so there are never more UFOs than will fit on those two shelves.