i just recently made one. out of a glass arizona tea bottle. complete with a diffused downstem. i went to a convenient store and bought the glass arizona tea bottle. then went to my local headshop and bought the diffused downstem, also made of glass, and a rubber grommet. and then off to the hardware store for the drill bit. i used a 5/8 diamond bit. i went home attached it to the drill, marked where i was drilling with a sharpie, put the bottle in the sink and ran the water where the bit meets the glass. once i drilled through the glass, i rinsed the bottle out thoroughly and then inserted the grommet, then downstem, and then i used duct tape to make sure that it was air tight. it is. now here are some pictures.
nice homemade unrelated(lol) [ame=http://www.youtube.com/watch?v=OSSH30fgSQg&feature=related]YouTube - Foreigner - Dirty White Boy[/ame]
haha i got asked if that' where my name is from when it was my gamertag on 360. but it's not. i saw a sticker the said "dirty white boy" at spencer's at the mall.