Remote physical telecommuting.
Little tin-can stoves and an example of a model of emergent economics
Plastic water bottle light bulbs
Version one of the junkstrapped solar water heater
Self winding watches... which would be better if they were in cellphones.
Aquaponics - combination fish-farming and hydroponics
A neat personal gadget, project
A return to human scale tool-making.
DIY Algae farms
