Buy 12" of 1/2" pvc pipe. The guys at your local hardware store can cut it for you and sell it by the foot. It's so cheap its basically free... Roll a piece of computer paper in a tube around your pvc pipe. Make sure it is loose enough to slide freely back and forth, but not to loose... Remember its going to be ROCKET!
Secure the paper tube with a couple bits of tape and slide it off the pvc pipe.
Secure the nose of your rocket with a staple.
Next cut the nose of your rocket into a cone with a pair of scissors and tape it shut, so no air can escape. You can check how well you closed your nose cone by blowing into the back of the rocket.
Cut 2 note cards, postcards or index cards (whatever you prefer to call them) in half diagonally and tape them to the base of your rocket in whatever configuration you think will make your rocket fly best.
Your rocket is done! Don't look too happy about it! Now to make the rocket launcher...
Cut the stem portion out of a standard road bike inner tube (700c or 27").
Tape one end over the end of the pvc.
Tape the other over the mouth of the pvc pipe. Again you can check how well you did making it air tight by blowing hard into the pvc pipe.
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