i recently just made a pipe out of a winebottle cork. i just carved out a bowl at the top and used a screw to make a thin tunnel going down the middle of the cork. at the bottom i hav a pen stuck into the side of it meeting with the tunnel. i haven't smoked out of it yet mostly because im afraid the cork isnt a safe material to smoke out of. it seems to be some type of wood but its kind of like a spongy wood.