Well, this originally was just a normal gatorade bottle that I made into a bong. It was nice, but I wanted a little bit more, so I took a diet coke bottle, cut it to size and attached it to my bong, and it created this: Milk vid: MVI_2491.avi - FileSmelt File and Image Hosting It's pretty nice. The hot-glue never comes in contact with anything heated (it's just to keep the two chambers air-tight).