I know it's a little thing, but when you're trying to keep hydrated during the day, and you're avoiding juices, sports drinks, sodas, and other sugary beverages – or worse, beverages with artificial sweeteners – it can be a little blah working on that second quart of water in the afternoon, right?
My suggestion is this: go into the baking aisle, usually right near where the spices are, and you will find itty bitty little bottles of flavoring drops.
Check them out! There are all kinds of flavors and they are sugar free! Cherry, orange, strawberry, vanilla, root beer, chocolate, anise, rum, banana, almond, coconut, lime, lemon, grape, mint, cinnamon, and more!
Your water goes from bland to yum in seconds.
And, you can flavor other beverages as well: Cherry, banana, or mint in cocoa is yum! Rum, vanilla, or caramel (or a combination) is great in coffee. Mint, lemon, orange, anise, or vanilla work in tea.
Experiment away, and comment with combinations and beverages of your own. Love that feedback!