Posted this earlier in this thread. And the water is far cheaper than the beer bottle. Just stuff the end with some napkins. I do it every game and it works like mad. Though the fans seated near you, look at you like WTH, cause it is so loud.
I'm sure a plastic bottle with a napkin is ok and all.
Man, I'm telling you, the aluminum miller lite bottle with a cap are the way to go to maximize noise. The cap is key.. because you're shaking it like a shake weight and you get noise from both up and down strokes. (yes, i know there's a btl joke in here :censored:) Plus, you get a nice buzz in the process. :shrug: