There are dark forces lurking in the nether regions of my desk, waiting to pounce upon any important piece of paper left there. They come out at night to devour pens and dribble coffee across the anything left unguarded. When they're feeling especially vengeful they scatter crumbs across my keyboard and pull the bookmarks out of my books. I know they've been here because they leave a fine layer of of dust and hair (looks like cat hair, but I know better) in their wake.
After many hours of battle, I triumphed over them today, but I can still feel them lurking . . . waiting . . . for me to grow careless and tired.