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Hey! I really like the project. I'm actually doing this for a science fair, I was thinking if there's another more creative way we could invent to exert air into the balloon?



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The activity can be viewed at: Build a Balloon Car

If you want an easier way to blow up the balloon, you could always use a bike pump or an air pump, but if you want bleep more fun, you could use a reaction to blow up the balloon. For example, I have seen people mixing baking soda and vinegar and using the gasses it creates to blow up a balloon.