Best noise making ideas!

Empty beer bottle and coins.

has to be the miller light bottles though. It's the only one with a big enough mouth to get the coins in.

You'll also either need to bring in your own lid or "bribe" the beverage server at the game. They aren't allowed to give the lid with the beer for some reason. I have been able to get them to accidentally set the lid on the counter for a tip. :)