I currently share a desk with 3 people. When I did have my own desk it wasn't long enough for me to get comfortable with putting stuff on it....I think it takes me a while to do that. It's no big deal, I just don't feel like putting myself out there for coworkers to see.
I have a coworker that's obsessed with the late Dale Earnheart. There are masses of magazine pictures that have been put into little heart-shaped frames. There's even one full ad cut out that has a pic of Earnheart walking away, butt to the camera, and underneath it says "Enjoy the view."
But that's not all. She also has a full collection of patriotic beany baby bears from each 4th of July. And tons of trinkets. Oh, and a full collection of annoying little comics taped above her desk, on the cabinets above, so that when we go to open the cabinet door it has a bunch of papers flapping at the bottom.
She used to have more when we were at the Main, where there was more room at her desk. She had a friggin' shelving system for all her trinkets. Ugh.