We normally bring two coolers with drinks and snacks. One of the coolers is actually for stuff that needs to be kept cold, and the other cooler is just used as a storage container for things that don't need to be kept cold.
In the cold cooler, we keep canned drinks. In past years, two different kinds of soda, but this time, we put canned lemonade and fruit punch, as well as bottled water. We also put cheese, lunch meat and pudding cups which don't necessarily need to be refrigerated, but the other cooler is normally too full with the other stuff.
In the other cooler, we put snack cake type things, such as Susie Q's, Twinkies, or any other Hostess/Little Debbie treats we decide to bring that particular trip. We also get cans of Pringles to put in that cooler.