its a cut in half 2-liter bottle, plastic bag taped air-tight to it. and then I suck the bag up into the bottle and put my bowl on the top and hold a lighter and then pull the bag out and it sucks the smoke down inside of it so its pure smoke no oxygen in there. only problem is, its a harsh hot smoke.
about halfway down put like that shit on screen doors
a screen to hold about 4 ice cubes should work IMO, put the screen about half way thru the bottle so the bag section still has the strength
i dont know how to fasten the screen inside the bottle tho