This is unusual but might have to give it a try too..

Gel Air Freshner Craft

Craft project courtesy of Blossom Farm.
Ingredients:
1 packet of unflavored Knox Gelatin
3/4 cup water
1/4 cup vodka of grain alcohol
1-2 TBSP. fragrance oil

Instructions:
Food coloring as desired Dissolve the gelatin in the boiling water.Allow to cool to room temperature then add the vodka, coloring andscent. Pour into decorative jar and refrigerate till set.