I've done the perfect thing.
All i did was make a trombone into a gravity bong. I 'borrowed' it from the store one night and put it together in my backyard... all I needed was a bucket of icewater bigger than the bell, and the trombone, mouthpiece, and screen. It worked freaking amazingly!
I dipped the bell into the bucket of water, lit the greens in the mouthpiece, and pulled the slide out for it to fill the trombone with. All I had to do next was pull the mouthpiece out and pull up the slide.
i was GONE!

try it guys, wish i had pictures.
doc:rastasmoke: