I'm struggling to figure out, why you would want to use something else? other than water... not that I'm trying to be offensive; I'm just curious.
I guess, as others have mentioned, that I would also recommend.
Ice
Snow
Beer/Lager/Bitter
I wouldn't really recommend fruit juices, more for the cleaning aspect afterwards. STICKY!
Honestly... just use water, or no water or ice. Though I suppose that doesn't answer your question sorry. hehe.
Peace.