We get either a bottle of water for the parks, or a bottle of juice for a quick in room breakfast the next day. Sometimes our dessert, if we don't feel like one right away, is a pastry or muffin that we save for the next day's breakfast with the juice.
Frequently one CS can be 2 meals for us. Mug drink & entree, then juice and a pastry for breakfast the next day. We're light breakfast eaters anyway, and eating in our room lets us get an earlier start to the parks.
We often stay at CSR, and last trip often returned before the Pepper Market closed at 11pm. Instead of using a snack credit for a munchie, we used one CS for the chicken quesadilla plate or nachos plate, had that for a late snack in the room, and used the beverage and dessert credit for breakfast juice & pastry. Since we tend to split a lot of the CS lunch meals, we had the extra CS credit to spend every day.
We'd fill our mugs on the way back to our room too, then DH would make the a.m. trek for his morning coffee since he doesn't like juice at breakfast and I do.