Well, my friend Christy Dorrity put together a recipe and you are welcome to play around with it.
Tasty Tuesday-Popping Water
1 can of lemon-lime soda
1 tsp vanilla or other flavoring (try lemon, grenadine, coconut, etc)
fresh fruit (try limes, lemons, oranges, cherries)
Combine ingredients in a frosty mug. Enjoy.