I bought a Soda Stream, which arrived at my doorstep a few days ago. Needless to say, I've been playing with all sorts of fizzy drinks: both alcoholic and non. Last night's experiment was ginger/lime/rum fizzy. Before that, a cran-apple-pineapple w/vodka fizzy (it was just ok: I'll leave off the pineapple next time).
I was excited to see an article this morning on the NYTImes about homemade ginger ale. So now I'm going to ask Serious Eaters -- got any recipes/ideas for fun, homemade sodas?