I got to try a pretty cool thing in Oregon a few years back.. living in the Portland area..
Guy had a bubbler.. basically a tree perc beaker.. but the bottom half of the beaker was missing.. and it was round.. so like a bubble if you will.
He also had a pair of long glass wands with flat paddles at the end.. you could heat the ends up with the torch or over the stove.. then put your hash or whatever right on the paddle.. cover with the other.. and hot knife right from those wands into a bubbler/bong/tube that was filled with ice..
It was a pretty rad system.. and wow.. lol.. in a pinch? You could do this in the wilderness. Loved it.
Screen on top of an enail!
http://www.youtube.com/watch?v=mJal84MHDpI&feature=c4-overview&list=UU1Ev2zN7eBStL3TZQHN0Q6A
i watched, where does the smoke go, got a pic of this enail by its self?