Colour Changing Ice
This one is perfect for a hot day! It does require a little prep, as you'll have to freeze the ice the day prior, but it's so worth it!
Simply add 1/2 Tbsp of the blue colour powder to about 1 litre of water, stir and set aside. Find a largish container (about 10 x 20cm) and fill it with arctic animals and biodegradable glitter. Then add the blue-coloured water and freeze overnight.
For the activity, place the frozen ice block on a plate or platter, together with a wooden hammer or chisel, a spray bottle filled with vinegar and a little bowl filled with bicarb soda.
Let the kids spray the ice and see how the vinegar changes the blue colour to a purple! You can also let them gently hammer the ice to free out the animals. This will create a beautiful, sparkly ice-themed playscape where they can play with the ice and the arctic animals until the ice is all frozen.