Here are my ugly cords, bleh.
I bought some of these "Mug Hooks" at Wal-Mart for about 2 bucks. They are peel and stick.
Then I stuck my hooks along the bottom of my desk like so. I knew the power pack to my lap top was going to be too heavy for the peel and stick hooks, so I attached two screw-in hooks to hang it on.
Here's how it looked once I strung the cords through, and hung up the power pack.
Ta-da!! No more cords!