I just heard about this at physical therapy! Homemade Ice packs: 1 part rubbing alcohol to 3 parts water, gets really cold, but never hardens so you can manipulate it. every athlete (or mom) should pin this!
Do everything without whining, complaining or arguing. Every one has their own jar. Start off the week with a set amount of quarters in each jar. If they are caught whining or complaining, they lose a quarter. At the end of the week, they get the money that remains. Need to remember this!