Start by pouring ins a box of baking soda into your sensory bin and spreading it out on the bottom of the sensory bin.
Arrange your clear gem rocks and penguins in the bin.
In a separate glass or container, mix blue food coloring and vinegar for 'icy water'.
Finally get your eye dropper ready.
Then, let the fizzy fun begin! Add the blue vinegar with the dropper and see the reactions happen. It's like watching tiny geysers erupt in the Arctic!