It only takes a few ingredients and it is really easy to do.
2 Tablespoons of salt
2 Tablespoons of water
2 Tablespoons of liquid bluing (Mrs. Stewart's brand is available in the laundry detergent aisle.)
1 Tablespoon of ammonia
Cardboard toilet paper roll
First, Lillie dropped little drops of food color on the cardboard roll.
And the next day the crystal had really grown.