Magic Treasure Rocks- baking soda, food coloring, and add water slowly until baking soda is moldable. Hide treasure inside of it. Let kids spray or drop vinegar on dried ball and watch it fizz and fall apart until treasure is revealed.
To make this fizzy potion you will need: ♥ A container (something see-through works best) ♥ White vinegar ♥ Food colouring ♥ Washing up liquid ♥ Bicarbonate of soda (aka baking soda) ♥ The enthusiasm of a child! ♥ A tray