In a mixing bowl, combine ½ cup of hot water and the 2 packets of gelatin powder. Stir until dissolved.
Add food coloring until desired shade is reached.
Pour ½ cup of very cold water in the bowl and mix with hot water.
Add 1-2 teaspoons of fragrance oil or essential oils.
Pour the mixture evenly into 2 jars.
Place the frog lid on top of the jar and tighten it in place.
Let the jars sit in a cool place until set (about an hour or two).
Place the jars around your home to freshen up any room.