“Bongs” or water pipes are of course a very popular item. A bong or water pipe is a filtration device generally used for smoking tobacco or other legal herbal substances. A water pipes construction (in function) is similar to a hookah, except smaller and especially more portable. A bong may be constructed from any air and water-tight vessel by adding a bowl and stem or “slide” which guides air downward to below water level whence it bubbles upward during use. To get fresh air into the bong and harvest the last remaining smoke, a hole known as the carburetor, carb or choke somewhere on the lower part of the pipe above water level, is first kept covered during the smoking process, and then opened to allow the smoke to be drawn into the respiratory system.