Duct Tape Bottle Rocket
Cut Top Off One Bottle
Place Top on Bottom of Another Bottle
Wrap in Duct Tape
Put 3-4 layers of tape
Cut Out Fins
Wrap in Fins in Duct Tape
Tape Fins On
Poke Hole in Bottom
Do this step for the rocket to fly.
Use Air Pressure to Launch
Use a bike pump to launch