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Cardboard Castanets

In honor of Earth Day 2021, I embarked on a special project for my kodomo kiddos to incorporate the three R’s: Reduce, Reuse, Recycle. If 2020 brought anything, it was a plethora of cardboard boxes (thanks Amazon!) and bottle caps…..don’t ask. But this meant an opportunity for multicultural learning and instrument-making. The results were delightful and well worth the hoarding!

Things you’ll need:

Cardboard (cut into strips approx. 1.5″ x 4″)

  • Glue Gun (used with adult supervision)
  • Bottle Caps
  • Paint Pens (optional)


  1. Paint the tops of the bottle caps as desired. I chose to try my hand at drawing the earth! Allow to dry.
  2. Cut cardboard into strips (approx. 1.5″ wide by 4″ long).
  3. Preheat glue gun. Apply glue to the outside rim of the bottle cap. Be careful not to burn your fingers!
  4. Press bottle cap (and glue) onto either end of the cardboard strips. Allow to cool.
  5. When glue is dry, bend cardboard strips in half so that the bottle caps touch.
  6. Turn on your favorite music and add that feisty percussion!

Happy Earth Day, y’all!