Pete, this is going to be a long one:
I certainly thought a liquid production from C&B would be cool, so I worked one out for competition at the IBM in Hawaii in 1982, I think.
The routine was a two cup routine, using aluminum copies of Paul Fox Cups (at least, I hope they were just copies.) Everything came out of a tackle box. The balls were cork fishing floats, the wand a piece of bamboo pole, the intermediate loads were natural sponges.
The premise was that I would do a standard C&B sequence, after which the balls would both vanish. A wave of the wand would send us back in time to when we had two balls, and they would reappear from the wand. This happened twice. Then a natural sponge appeared under each cup. Then the cups were placed mouth-to-mouth, and the entire trick went "back in time, back to when Japanese fishermen used delicate glass fishing floats" (about 2.5" dia)The top cup was removed, to show an antique glass float apparently floating on something that filled the bottom cup. The float was removed, and out of the cup was poured water, and then a Siamese fighting fish.
One of the cups was gaffed with a plastic disc that sealed off the cup at the first rim (about 1.25" into the cup) I installed a sliding trap door into the disc, that pivoted around a central axis. This allowed the cup to be filled with water and a fish, then sealed off. The space beneath the disc allowed the cup to be used as usual, as far as the small balls were concerned.
At the end, when the Japanese float appeared, it "floated" on the gaff, simulating the action it would have if floating on water.
I liked it, but I never used it for anything besides the competition. Michael Ammar thought it might be a nice addition to the C & B book he was compiling, but when I sent him a tape of the routine, it arrived blank. I never did get around to sending him another.
And, perhaps in answer to your initital question (finally) I didn't even win the competition. Seems the judges were more impressed by some goofy dweeb who also did C&B, but he produced three chicks at the end. (and then a dove, and then split the dove, but I digress...)This, of course, was when both he and the chicks were younger, so the cups weren't walking around on the table on their own, like they did last itme I saw him.
SO TO CUT TO THE CHASE: Livestock 1, Liquid 0.
but I'm not bitter.......