This is my wonderful Ikea computer desk:
http://www.ikea.com/PIAimages/40906_PE135017_S4.jpg
On the very top shelf I have:
• Undead Rogue figurine
• Murloc plushie
• P-chan plushie (little black piggy from Ranma 1/2)
• Sushi plushies (
link)
• Jack Skellington lunch box (shaped like a coffin)
• An empty box flat that is my cat's bed of choice
In the little shelves above the monitor I have:
• Song of Ice and Fire books
• Sword of Truth novels
• Photo of my father who passed away before I was born
• Samurai voodoo doll
• Japanese stamp set
• Coffin shaped jewelry box (filled with earrings, necklaces, etc)
• Headphones
The white backing of the right hand side is magnetic, so I use it like a fridge door. I have:
• Photos of my pets
• Doodles my friends drew of me
• Marilyn Manson magnet
• A few anime related magnets and pins
On the tiny white shelf below is:
• A small gargoyle statue
• A skull with an open top that I use for loose change
• Sketchbooks
On the desk surface there's usually:
• Pop cans, dishes, glasses (I eat at my desk xD )
• Stacks of papers from doodles and sketches
• Random spiked bracelets/collars that I was too lazy to put somewhere else
• Lich King mousepad (on the keyboard tray)
In the drawer I have :
• Various pens/pencils
• Notepads, random crap
• Chocolate bars, candy, etc (snack stash)
• Authenticator attached to a lanyard which is looped around the drawer handle and tucked inside (makes it easy to find)
And directly beside my computer desk is a book shelf filled with mangas, anime DVDs, and figurines (including a full shelf dedicated to Sesshoumaru merchandise alone

, I'm such a nerd)