Ambulates without assist...

It's another dreary day at the walk-in clinic in downtown Los Angeles. Older guys are coming in to have their feet looked at and to receive their annual flu shot. I've been spending most of the day thinking about what I would buy for lunch at SUBWAY. Had I known things were going to be this slow, I might have brought my Christmas card mailing list to update.
What sort of things do you do to pass the time at work when there is no work at work?