Depends.. Since I've been stuck working in restaurants, sneaking mixed drinks in to go cups or coke bottles filled with jack & coke usually make my day more interesting..

That and playing Angry Birds or some equally overrated phone game. Or if I'z feeling super productive, get the 8 million silverware rolled that we'd have to roll and maybe do some side work. And then talk the manager into cutting people so I could either A.) Make more money or B.) Roll out early instead of wasting my time just to make an extra $5.