This simple toy sounds like a swarm of bees.

Give a light source the raspberry and watch it wiggle.

Build a cuíca—a musical instrument—and play with vibrations.

Wrap a string around your head and pluck to play music.

Play songs by banging a PVC pipe against your palm.

Listen to the radio in an unconventional way.

Demonstrate how different objects vibrate at different frequencies.

Create a sound system for music only you can hear.

Make a jumpy mechanical pet that takes itself for a walk.

Tune in to tunes with your teeth.

Two lips make sound.

This surprising instrument is fun to make—and even more fun to play.