All you need to do is take a 20 ounce pop bottle, take the lid off and pop a hole in it with a pen. (So your set up so far should have a 20 oz. and the lid (taken off the 20 oz) w./a hollow pen pushed through it.) Roll a joint that is about the diameter of the Pen and stick a little bit of it in the end of the pen snug. so u now have joint pushed into the pen, which is pushed through the cap. So left to right: joint, pen, cap. then take the lid and screw it back onto the pop bottle. The joint should be suspended inside the 20 ounce. This is a self contained joint. You suck through the hollowed out pen (which is merely an extenston of the joint) and the excesse smoke from the J stays inside the 20 Ounce, while your hit comes through the pen and into your lungs. Once you hit it, you use the dryer sheets in the paper towel tube to blow ur smoke through. Or you can just sit by the window and be conservative with your hits.