It would be nice to also remember to include passive solar projects and how to create them. Passive solar is usually pretty cheap to work with and takes some of the strain off of the electrical / gas usage. Some are water heaters, heat sinks, ovens and other cooking devices, window boxes that store heat and can be used as small green houses. I remember so many passive projects that were developed in the late 60's and early 70's that seem to have been forgotten. There are also passive cooling methods that were used in earlier times when air conditioning and electric fans didn't exsist. I would love to see reutilization of past technologies that are less dependant on electrical output.
Tomico