Chi-qoo DIY Solar Power Pack Kit --- A powerful DIY solar power pack for charging smartphones, iPads, tablets and much more. The power pack utilizes highly-renewable bamboo, and it's DIY so you can fix it and upgrade it yourself!
DIY Cheap Geothermal system, We are getting ready to do a similar system to this except the heat exchange coil will actually be buried under the compost pile for brining some heat to the chickens in this very cold portion of the season.
Build a simple solar-powered outdoor light by Jeffrey Yago. This article gives detailed instructions on how to build this commercial quality light to illuminate a parking area, remote outbuilding, dark driveway, or large road sign.
Superbright Solar Light Kit This kit contains ToughStuff's new range of products available in developing countries. Each kit contains: 1.5 watt solar panel - lightweight, flexible, and durable Superbright LED lamp - rechargeable, provides up to 30 hours of light on a single charge