Not just summertime for me, but certainly summer-appropriate: I keep a pitcher of unsweetened decaf iced tea in the fridge. I fill a glass with 3/4 of this iced tea, plus something else: lemonade, cranberry juice, OJ, mango juice, or whatever else happens to be in the fridge and complementary to iced tea.
Oh, and no ice cubes. But that's a different thread. (
http://www.tfproject.org/tfp/tilted-...ike-yours.html)