(practical) applications of the Bernoulli's principle?

Question

I need ideas for my science investigatory project. Anything useful.

Answer 1

Build an aeroplane or helicopter?  Frisbees, when thrown properly, also work on Bernoulli's Principle, so you could do something with that.

Try building a frisbee with an electric motor that makes it rotate faster or something.  Then make another one and send it to me, because that would be awesome!