i drink water w/ some lemon if it is getting boring. i also drink decaf green tea, unsweetened. you really dont want to load up on anything w/ sugar or juices. maybe try making a black cherry tea and drinking it cold. celestial seasonings makes a lot of cool flavors. :)
Tomato juice or V8, on ice.
I use drop in's. Can't use crystal light because the sweet n low but 4C totally light makes theirs with Splenda. They have all diff. flavors... decaf tea, pink lemonade, lemonade, etc. I Love them!! Plain water is far too boring for me!!!
BTW- that martini sounds real good about now :-)