Boing Boing Boing

I used a plunger, four eye hooks and three elastics to make my stringed instrument. My dad helped me drill the holes.

I screwed the eye hooks clockwise. My dad tied the elastics around the eye hooks.

To make a loud sound, I pluck the elastics. To make a soft sound, I stroke the elastics.

I change the pitch by using different size elastics. The thin elastic has a high sound. The medium elastic has a medium pitch and the thick elastic has a low pitch.