Don't worry if you don't have an actual cowbell to bring to the Games b/c you can turn your iPhone or iTouch into one! Download the app here.
Growing up we only took cowbells to away games. It was a good way for a small amount of people to compete w/ the noise of the home crowd. I went to a Junior A hockey game over Christmas and lots of the home fans were using them too. Just goes to show you that everyone can use a little more cowbell!!!