Fantastic Fizzing Treasures

National Treasures is fun, exciting and beyond adventurous. Today in crafts with Aero, we are going to be making fantastic fizzing treasures. With a few simple ingredients and small treasures to hide, it will be one cool experiment! Watch the video and check it out! 


  • Water 
  • Baking soda 
  • Vinegar 
  • Coins 
  • Small bowls 
  • Tablespoon and teaspoon 
  • Food colouring (optional) 
  • Tin Foil or parchment paper 


  1. In the bowl, add in 3 tablespoons of baking soda and 1 teaspoon of water. Optional to add in a few drops of food colouring. Make sure the consistency is wet enough to shape in your hands, but not too watery! 
  2. Make a ball about the size of half a teaspoon using the baking soda mixture. Add in a coin or secret treasure inside the middle. 
  3. Place the treasure stones on a plate lined tin foil or parchment paper. 
  4. Repeat this step with the variety of colours you desire in a separate bowl. 
  5. Place them in the freezer for AT LEAST 1 hour. 
  6. Once they are ready, take them out of the freezer and drop them into a bowl of vinegar one by one and watch them fizz! 
  7. Make sure you go and find the treasures in the bowl! 
Download a PDF of the instructions
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