I like keeping things clean, simple, and organised. So much so, I have only a few things on my work desk at home. Occasionally, there'll be a notepad/magazine/letters that find it's way there, but they're usually moved to the bookshelf behind me pretty quickly.
Click through the photo for the breakdown of components on my desk. The wall as you can see is quite bare, I'm planning on putting up a few prints I purchased from Paris years ago to spruce it up a little.