In the 8th century, Charlemagne declared that 240 pennies should be minted from a pound of silver.
In the 21st century, CV3000 declared that you should stick a few pennies in a plastic bottle and shake it like a Polaroid picture so the ducks can't hear their own excuses. It was 112 decibels on the field during the USC game, but I think it can be even louder with a little old fashioned Beaver ingenuity.
All it would take is for 1-2 fraternities or sororities to get organized and make sure that there are several hundred of these in the student section. Get to work!
For just pennies a day, you can deafen a bear.
1) Insert pennies. 2) Shake Vigorously 3) Beat Cal