On a particularly thirsty day, I wound up picking up these from the grocery store in the "New Age Drinks" aisle. Both were on sale for less than a dollar a bottle, so I paid all the CRV charges and sipped away.
This first one is called Activate Energy, and basically, it claims to have vitamins in the cap that are released when you twist it. I tasted nothing while drinking this... I didn't even see any powder/vitamins! The water did taste really "clean," though, which I guess means there was something in it. ;)
While I don't drink sports drinks anymore (click on the tag on this post, and you'll see all the ones I've tried in the past), I do like to have these so-called "New Age" drinks as an alternative to soda.