DIY Birthday Balloon Cars

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As a child, were you fascinated by how things move? Do you wonder about new technologies and how they actually do work? Most children ask questions to ask. I, for one, know because my brother questions everything and he’s only 8 years old.

Have you ever had a birthday party? Well if you have you must have lots of supplies left over… In Innovation and Entrepreneurship Club last week, Group 1 students built BIRTHDAY BALLOON CARS from recycled party goods!!! To do this at home you will need:


  • 4 Bottle Caps of the Same Size
  • One invitation or thank you card
  • One Balloon
  • Three Straws
  • Two Pens in which you can remove the ink
  • Electrical Tape
  • Scissors
  • Nails

How to Make Your Own Birthday Balloon Car:

  • Remove the ink from the pens.
  • Cut 2 straws to be the size of the ink.
  • Tape one straw onto the end of the card and another one on the other end.
  • Using the nails make holes in the center of the bottle caps.


  • Insert 1 bottle cap onto the ends of the ink.
  • Place the ink into the straws and put another bottle cap on the opposite ends.


  • Tape the balloon to the straw. Make sure NO air can escape.
  • Flip the card. Make a loop with a piece of tape and place it in the middle of the card and underneath the balloon.
  • Tape down the straw to the card


  • Blow the balloon up and RACE!!!!


Your Birthday Balloon Car is Ready to Race!!!!

What We Learned?

Students learned about alternative energy and sources. They built axles with wheels and learned how tires work on actual cars.  In these balloon cars, they learned about harnessing the potential energy in the balloon and using the change from potential to kinetic energy for your advantage. The energy released from the balloon propels the car forward.

In the end, all the students raced their cars in the hallway with all their parents cheering behind them. It was a great experience!! I had so much fun and cannot wait for our next project. For more information about GGKLI’s Innovation and Entrepreneurship Club click here!

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