(link) REUSE & CONSERVE WATER ~ The next time you boil eggs (hard boiled eggs, deviled eggs), save the water and pour it onto the soil (NOT plants!) for your garden and houseplants. The water becomes enriched with calcium from the boiled eggs shells.
Overwatering can cause leaf fungus on your plants and also attract fungus gnats. Get out the good old Baking Soda, some biodegradable soap, a gallon of water and mix yourself a nice, organic bug killer.