Youth pee wee cheer squad coaching help?

My sister is a coach of a youth pee wee squad and im the istant coach, last weekend the girls misbehaved at a game and it happened to be that at the same time my sister was sick.The other istant coach made the girls do 75 push ups, i felt like there was something other than that that we could make the girls do. So in case this situation happens again, i would like to know what i can do instead of making them do 75 push ups...such as perhaps running or something appropriate for their age but also that will discipline them.