Something's Gotta Be More Entertaining than Filing

So... I'm really bored. I can't do any more filing, because I'll rip my eyeballs out just to give me something else to do. Four people are gone from the office today, which leaves only 15 people in the office-- it's really slow. On days like this, and all last week, I find it very difficult to find something to keep myself from falling asleep with my eyes open or driving myself mental with boredom. Amy suggested I could scrub down the kitchen... um... no... I'd rather do filing. What do people do who don't have anything to do? Is reorganizing the supply cupboards and scrubbing down the kitchen my only option? Because the filing won't last forever, so once my pile's done, I'm left with absolutely nothing else to do on my desk.
So help me out! Give me some ideas! I've read every headlining article on cnn.com, 9news.com, and all my blogs that I subscribe to... I'm desperate! HELP!