Make colored sand art by stirring a chalk stick in a bowl of salt. it changes the color. Stir less for light color and more for dark richer color. (I used to do this with salt and food coloring. but the chalk stick idea is brilliant!
How to make a mouthwatering watermelon slushie recipe with one secret ingredient 5 cups of crushed ice 4 cups of cubed watermelon (seedless) 1 squeeze of lemon juice And the secret ingredient: cup of Cool Whip