1. A roll of duct tape
2. A cardboard tube
3. Some sort of cardboard box
5. Compass (mathematical)
6. A rocket engine
7. Straw (optional)
Step 1: The Body
Step 2: Trim the ends off according to the length of your tube and how small you want the rocket to be.
Step 2: Adding the Fins
It's up to you to decide how you wish to orient your fins. I chose to use 2 sets of four. One large set in the back, and one smaller set in the front.
Step 1: Take your cardboard box and cut out a stencil for each size of fin. Make sure to mark these so that you don't accidentally end up using them.
Step 2: Cut out 4 of each size
Step 3: Cover the fins with duct tape. Fold the tape over the cardboard and trim off the excess.
Step 4: Attach the fins to the body. I recommend placing them about an inch from the bottom and/or top.
Step 3: The Nose Cone
Step 1: Create a double-backed sheet of duct tape that is about 3 strips in width and length (this means putting the two sticky sides together)
Step 2: Cut a circle out using a compass and scissors
Step 3: Cut the circle in half
Step 4: Curl the semi-circle up until the bottom of the cone is the same as the circumference of the top of your cardboard tube (until it fits snugly on the top)
Step 5: Attach with more tape.