This is getting a bit freaky - this is about the 8th post in a row dealing exclusively with non-alcoholic beverages. WTF? I'll have to get back on track soon.
A request from my sister-in-law prompted this one. I wasn't aiming for anything too fancy but it turned out interesting enough to merit recording...
1 1/2 oz lime juice
2 oz strawberry-watermelon syrup (turned out relatively dilute thanks to the water content of the melon)
2 oz iced white tea
2-3 dashes rhubarb bitters (homemade)
Shake and strain over fresh ice, then top with about 2 oz chilled cucumber water. Garnish with whatever's handy - watermelon would be particularly appropriate.