Now go outside and look at the sky.
The Guardian has a long-standing special section with portraits of writer's rooms. I'm fascinated by this collection and I can't get enough of the writers describing their own office space and desks.
We all seem to have very different needs to get into a creative zone and to work on something that we have to create in our minds out of nothing. And professional writers are pretty much the endurance champions in creating new things. They spend many hours every day staring at a wall or a bunch of pictures or out the window. They write and read a lot and their desks usually show the traces of this work with piles of books and papers scattered everywhere.
The writer's rooms collection is an interesting window into the minds of these writers and I can only recommend checking out those messy desks... makes it so much easier to put off cleaning my own desk. :-)