Not only blocks, could this be used as a 'speaker'? You will need to allow the Camera and Microphone access to make the microphone work. The Volume affects the displacement of the speaker.
@Gtoal took my original Speaker project and did a really neat little fudge on it. I love user-made calls (they're FAST!) so I've adapted his adaptation. The music remains "Time Beat" by Ray Cathode, although another piece is easy to access inside...
