Imagine a world without electricity, water, or any other essentials. If we do not switch to more energy efficient systems, the world would soon be left without any resources. So, what should you begin with in order to make a difference to the world?
Whether they will admit it or not, everybody has a little bit of dumpster diver in them. This is not to say that people like digging through refuse heaps for scraps of food and half-empty vodka bottles, but rather that they have an interest in salvaging items that others no longer want but that can presumably be turned into useful and attractive things with the right attitude and a little bit of elbow grease. Just as a skinny kitten rescued from the alley or a Charlie Brown Christmas tree calls out to us, so does the abandoned stuff of others cry out to us for rescue and revivification.