I have a camelbak i never use anymore so i thought it would be really cool to use the bladder/hosing to make a bong that would go in the back. I want to rig it so that one could walk around with the camelback on their back and take hits. So I would have a cool bong, that is disguised as a camelbak which could also be used to store my other pieces and my stash. Im not sure exactly the best way to do this, so anyone who knows how camelbak's work, any suggestions are appreciated. P.S. If I actually get this thing to work ill be sure to post a pic.