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How to Make a Balloon-Powered Hovercraft

SAFETY FIRST: Ask an adult to help with tools you haven't used before.



  • 1 4-by-7-inch foam board (A thoroughly cleaned foam meat tray works great.)
  • 1 large flex drinking straw
  • Average size balloon
  • Scissors
  • Hole punch or pencil
  • Glue gun
  • Pin
  • Tape


Step 1. Cut out the bottom of a foam tray. Be careful not to bend it.

Step 2. Place the flat foam under the body template and trace it by poking holes with a pin along the outline of the template. Also trace the straw slot. Trace two fins and the balloon ring using the same method. Cut out the foam shapes with the scissors. Make a center hole in the balloon ring with a hole punch or a sharp pencil point. To download a template to trace click here.

Step 3. Cut a sharp angle on one end of the straw and make a flat cut on the other as shown.

Step 4. Stretch and bend the straw, then glue the balloon ring to the flat end. Stretch the balloon over the circle. Carefully glue this assembly over the straw slot so that no glue is inside the straw and none of the straw or glue is below the bottom of the body.

Step 5. Glue the two fins to the rear sides of the body.

Step 6. Make an inflating straw by taking the leftover half of the straw and cutting two 1/2-inch slots in it. Roll the end into a taper with your fingers and tape together. Use the inflating straw to blow up the balloon from the bottom.  Pinch the neck of the balloon and release on a smooth, clean floor.


The hovercraft will work properly only on a smooth, clean floor. The bottom of the hovercraft should also be smooth and clean.

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11 Comments on How to Make a Balloon-Powered Hovercraft

  1. i luv this hovercraft of epicnesssss. It’s time to pony up! -Rainbow Dash

  2. says says says says // December 1, 2013 at 4:23 pm // Reply

    you said it j man

  3. seems kool ill need to try it

  4. Fire ball 25 // June 3, 2013 at 8:05 pm // Reply

    Awesome boss epic crazy sweet as candy

  5. How about it // June 3, 2013 at 11:47 am // Reply

    If you put wheels on it, it will be a air powered car

  6. scouter101 // May 30, 2013 at 11:01 am // Reply

    i just need the baloon and the straw and im ready to go

  7. i love it

  8. i might just try this! :]

  9. Made this. Awesome

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