One of my favorite home made peices is the waterfall. Take a two liter bottle soda bottle (normal size will work too). Take the cap and make a hole so you can fit some type of bowl in it. I use a lighter and when it is hot push the tip of the bowl in so it cools and makes a better seal. Then near the bottem cut a small hole. While covering the hole fill the bottle with water. Light the bowl and let off the carb allowing the water to flow out. Keep the bowl lit till all the water is out. Unscrew the cap let of the carb and inhale. Very easy to make and a nice hit off of it as well.