Pot smokers are the most intelligent and innovative people I know!! The freaking engineers I work with couldn't come up with even half of the innovations I've seen on this site!!
I made a one hitter out of a ball point pen, which eventually turned into a bong after collecting some other parts from classmates. This was on an extended class field trip in college, because my buddy packed the weed but forgot his pipe! There were a number of people who were very happy with that collaborative brainstorming session in the tent!!!