Penny wars
From FIRSTwiki
A penny war is a type of fundraiser that is used by FIRST teams. A traditional penny war is held between multiple parts of the student body, either by homeroom, grade, club, or other method. Students then bring in pennies, which are put in their group's jar. Members of other groups may then attack the jar by putting in money of other denominations (nickels, dimes, quarters, half-dollars, dollar coins, or any folding money). The amount of non-penny currency is then subtracted from the amount of pennies, giving that group's score. The group with the highest score wins, and usually wins some prize such as a pizza party.

