-----
SIMPLE BONG
-----
Exerpt from the FAQ-bong.txt
To be found at 
http://www.hyperreal.com/drugs

-----
BONGS
-----
Water bongs, also known as water pipes (esp. in head shops), are,
IMHO, the most enjoyable, comfortable and easy way to smoke. The bong
is essentially a sealed chamber half-full of water. A pipe with a bowl
on the end goes into the chamber and the water, another pipe with a
mouthpiece on the end that enters the chamber but stays above the water
level. You put bud in the bowl, apply a flame to it and suck on the
mouthpiece. This will lower the air pressure in the chamber, causing
air to travel from the bowl, through the water, into the chamber and
into your lungs, pulling the smoke with it. The water cools the smoke,
as well as filtering quite a few carcinogens from it, and you usually
get a couple of tokes because the chamber fills with smoke. You can build a
carb into the bong to drain the chamber, or leave it without (some
prefer this, as it's a less immediate way than a carb to drain the chamber
if you just keep sucking on the hose). Here are a couple of designs that
I've found to work.

        Mason Jar bong
        --------------

The standard. I'm no great ASCII artist, but I'll give it my best.

     > _________
    /   -------.|        ____
   mouthpiece  ||        \  / <---- bowl
               ||         ||
               ||         ||
           ____||_________||____
          |____||_________||____|
          |    ||         ||    |
          |    ||         ||    |
  jar --> |               ||    |
          |               ||    |
          |^^^^^^^^^^^^^^^||^^^^| <---- water line
          |               ||    |
          |               ||    |
          |               ||    |
          |               ||    |
          |_____________________|

Classic design, efficient, easy to make and paint. I used surgical
tubing for the mouthpiece and one of the aforementioned toilet tubes for
the bowl and pipes (I cut a piece about two inches off and stuck it
through the lid for the shorter tube, put the tubing over that). The
carb could be placed in the lid if you wish (mine is carbless).

        Coke bottle bong
        ----------------

This is a simple design, but the most efficient bong I've found. Take a
1-litre plastic bottle and put two holes in it, one about halfway down
the bottle and the other on the opposite side about an inch up from
the bottom. Take a pipe & bowl (toilet tube is perfect, once again) and
insert it in the lower hole. Hold the pipe up at about a 60 degree angle
so that the bottom of the pipe is almost at the bottom of the bottle and
the bowl is sticking up as much as possible, and seal/glue it in place
(I use hot glue for this one and change the bottle about every month,
scraping out the old one for resin, keeping the toilet tube). Fill the
bottle up with water to about halfway between the two holes. You hold
the bottle straight up so that the bowl is pointing up and away from
you. The hole halfway up on the back is your carb, and suck from the
mouthpiece of the bottle. You can also make it out of smaller bottles
for more portability, or link two or more bottles together, or use
bigger bottles for a larger chamber... experiment.