1. In a Water Bottle
Why is the old standby number one? Because it's a classic. What makes it even better is that everyone knows exactly what you're doing. Why does that water have a brownish tint? None of your goddamn business, officer! What makes this method better still is that you can announce your personality via the receptacle you choose. Dudes that front like they're better will choose Starbucks over McDonald's. The crunchy yoga types will fill up their Nalgene while bros will select Gatorade bottles. To each their own. As it should be.