I've been at the University for almost thirteen years now; four years as an undergraduate, three years doing a PhD and now almost six years as a member of staff. When I started my PhD I was given a desk. At some point they replaced the furniture but my desk still sat on the same piece of carpet. I've recently moved into a smaller office rather than an open-plan lab.
I now have a door that I can hide behind, unfortunately it has my name on it so I'm probably easier to find!