As an aside, this isn't as 'hi-tech' but with a paper plate, styrofoam bowl, sheet of paper and a magnet you can make a speaker, too. https://www.youtube.com/w

As an aside, this isn't as 'hi-tech' but with a paper plate, styrofoam bowl, sheet of paper and a magnet you can make a speaker, too. https://www.youtube.com/watch?v=Awef78YtWmc#t=8s https://www.youtube.com/watch?v=Awef78YtWmc#t=8s It's just a neat thing to do during a break, or if you need a science project.