Here's a clever idea from Apartment Therapy - clipboards on the wall that hold your clutter!
"You know all of those papers that pile up on your desk and make it difficult to get any work done? They often get tossed there in haste, but here's a solution that takes barely any more time yet keeps your desktop pile-free:
Hang a few clip boards on the wall and clip papers into them anytime you need to keep them. You don't even have to sort and organize the papers right away: just clip them up and sort once every week or two. Or, if you're a tad more organized, assign a category to each clip board ("inbox", "outbox", "bills to pay", etc.) to keep your papers sorted from the get-go."
More on using your wall space: