Save on sports drinks

We have two sons involved in sports. To prevent them from becoming dehydrated in hot weather, we have allowed them to drink sports drinks. (Generally they are limited to 100% juice, milk or water.) To save a bundle on sports drinks, I purchased Gatorade mix and mix up a 1/2 gallon in a pitcher. On game days, I give them a reusable drink bottle containing the Gatorade. Muche easier on the environment than single serve drink bottles, too.