A wonderful device can be made by tying a sturdy rubber band to the end of a pen. Then you slice a fresh new crisp business card cleanly in two across its short axis, and launch one of the halves with the pen/rubber band device. With practice, a range of forty or fifty feet can be achieved. On impact, these things hurt. Do not shoot anybody who won't laugh it off! Blood has been drawn in this manner. Not much, but a little. This should only be done after marketing has gone home for the evening.