Do you have a pencil, a pen and a rubber band? Yes, then lets make a crossbow! First, remove the inner and back piece of a pen which will make it a barrel. Take a pencil and saw off the both ends of the pencil. Now take a tape and attach the pencil with the pen case in a crossed form. Then take a rubber band and cut it in half. Now attach the rubber band with the tape on both sides of the pencil. Take the inner part of the pen and use it as an arrow. Your crossbow is ready and you can use it for fun pass time.