i love waterfalls and gravity bongs but i was tired of using crappy water bottles, so i made my own out of a paintball pod. I just drilled a hole in the top for a bowl and a hole in the bottom so the water could come out. this thing gives some killer hits too. also here is a crappy video to show it working ,but the smoke didnt show up that well. [ame="http://www.youtube.com/watch?v=s_6n5EdNZCM"]YouTube - waterfall bong[/ame] im also gonna throw my hennessy bong up too.