vapzilla is basically a rip of the fogger which you can probably find on ebay
it uses a mini oven heating element if I recall correctly
the bubbler thing is pretty easy to do
mini sherlock bubs and such usually have a bowl that'll perfectly fit the tip of any old vapor bros or vaporwarez
add a screen to get the widest possible surface to work with and use fine ground bud in coin thick layers with the water about 2 pennies high past the downstem
you don't want water to bubble just to be pushed by the air enough to act as a wall of absorbtion for the particles as you inhale
think spitball hitting wall
http://us.st11.yimg.com/us.st.yimg.c...7_1906_1088742
you only get a small space for bud but it's a single hit per perosn sort of vapor rip anyway
Also the silversurfer vap has a 50 some buck addon that replaces the glass mouthpiece with a bubbler that terminates in a tube that fits in your plastic tubing but I prefer all glass since you are drawing hot air like you would on a bong