With a more eco-friendly home design, you could save on electricity costs through such things as heating and cooling. If you invest in a water tank or a recycled grey water system, you could save on your water bill. A green home could also reduce your carbon footprint and help you become more self-sufficient. So without further ado, here are 6 eco-friendly design ideas to keep in mind when you play homemaker. Alternatively, scroll down to read more information on each tip.