You will need:

2 cups of hot water
a dish
2-3 charcoal briquettes
a spoon
1/2 cup of Epsom salt
food coloring (optional)

Add Epsom salt to 2/3 cups of hot water in the dish. Stir for 3 minutes. Put 2-3 charcoal briquettes into the dish. (Food coloring can be put on the charcoal to grow colored crystals.) Place the dish somewhere you can watch it and don't move it for 5 days.

Please Note: the crystals that will form on the charcoal briquettes are from the Epsom salt.
 
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