Make Waste Valuable
The end of one thing is the beginning of another. There is no throwing "away" on a finite planet.
EXAMPLE IDEAS
Capturing the heat from shower water as it drains to preheat the incoming cold water, which reduces the energy required for new hot water.
“Gray water” systems that make water from showers and laundry clean enough to use in flushing toilets or irrigation
Building deconstruction instead of demolition