Solar Ice Maker: No Moving Parts, No Electricity. Not a how-to, but it works on the same concept a propane refrigerator does. Could a propane refrigerator be retro-fitted to work using solar like this?
Ultimate Knots. This is what my dad taught me years ago but I can never remember it. Pinning.
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Sailing And Boating Knots NEW Book by Andy Steer
Boating Knots | How to Tie Boating Knots | Animated Boating Knots: for my nautical kitchen
arduino car http://www.pinterest.com/luciobrit/arduino-raspberry-pi-galileo-other-boards/?utm_campaign=recs_141103&utm_term=3&utm_content=551479985559376966&e_t=b540d3f28ea448ddb9e3b793e6fa5963&utm_source=31&e_t_s=boards&utm_medium=2011
Best list of arduino project ideas along with sources we have published here. It includes arduino based battery charger, arduino based thermostat and etc..
Atmosphere layers of earth - Studies in science
HowStuffWorks "Moon Phases". I like that it actually shows the Sun's shadow so students can understand how this works!