2 liter bottles work good
the trick is finding a good bowl with a stem.
if you cut the top and bottom off an aluminum can you can roll up side sheet into a tube, then pinch it about 2cm from the top and make the top part into a round bowl. pinch the bottom as well and the aluminum roll up wont unroll. now stick that into the 2 liter. you can duck tape around it if you want it really airtight, but for an improv bong its not really worth it, plus if you dont do it right it tastes like duck tape.
oh and for all those that are gonna tell me aluminum gives you arthiritis, please go to
www.erowid.com and do your homework.
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-It was a 38, the poor man's machete
-Held it in my hand thinkin damn man its heavier than expected
-wedged it behind my belt buckle, knowin that its evil, even thought i could smell trouble
-the extra strength felt weak, but over there on the corner, saw what i need and proceeded to cross the street
-put the heat in a mailbox, to lose it
-figured the post office knows whats best to do with it.
Atmosphere