Once in a while I find a decent environmental technology resource that has a high practicality to politics ratio. This one, Journeytoforever.org, is about the best I've ever seen.
And through them I found developmentbookshop.com. Here you'll find references for simple practical technologies that you could put to work on your farm or in the most godforsaken Third World countries. They're based in the UK, so prices are in pounds and delivery will take some time.
If those packs of elitist jerks like the Sierra Club or joyriding adolescents like Greenpox were worth the powder it would take to blow them up, this is what they'd be promoting.