try using a play on words of sorts. like my glass mold bong with a diffuser chamber and aurora stem, i named it 00420 james bong (a la james bond) try something that describes the action of smoking, with a sort of play on words. my hookah, on the other hand, is hosey moses, which just sort of came to me. my bubbler, though, is aquaman, because of the freezable liquid in the mouthpeice. just try something that will help describe the piece, and that gives it a personality of its own.
all the best in your pursuit of a name, and good luck. i'd like to hear how well the bong rips.