When cleaning your fish tank, save the old water. Let it sit for one hour so dirt sinks to the bottom. Then, gently pour the clear water from the top into a jug, not getting any dirt. Give this rich water to your Pothos plants every 1-2 weeks.
After you boil potatoes or rice, keep the cooking water. Let the water cool, then use it to water your Pothos plants. Based on your plant needs, you can do this once every 2-4 weeks.
Save the shells from 4-6 eggs, wash them well, and let them dry. Crush the shells into tiny bits and let them sit in a gallon of water for a day. Strain the water and use it on your houseplant once or twice a month.