I get tired of water though. And I can't stand the taste of sugar-free drink mixes... they're all too sweet and full of weird colors and flavors I just don't find appealing. Adding lemon or lime wedges to water isn't quite enough for me either.... but it seemed like there was nothing in between. Everything was either too much or not enough.
I came across these packets of crystallized lemon juice one day at the grocery store called True Lemon. I had bought them for a while to use in iced tea, but then the company started making more flavors and I decided to step it up a notch. The True Citrus Company now makes True Lemon, True Lime, True Orange, and True Grapefruit... plus a lemonade and raspberry lemonade sweetened drink mix using Stevia. They're not all available everywhere, and they generally run about $4-$5 a box (of 32 packets) in the area I live in right now. That gets pricey over time, but I'll come back to that in a moment.