Check out this smart storage solution. I would probably use this in a home office that doesn't have its own designated space. The divider could be backed with exciting paper on the other side to hide the clutter.
We've used a similar corner shelving unit to create space in a small 7 by 9 ft room. It's a great, easy shelving solution for small spaces (although installing it was a bit tricky as the walls weren't plumb.