"Zabaleen" is the Arabic term for those visionary and enterprising people whose culture revolves around recycling. The Zabaleen are experts at "transforming one man's garbage into another man's gold" and aspire toward a net zero-waste economy. Applied and supported this could lead to true energy independence, not only by radically reducing our demand for "raw materials" and hard to extract natural resources but by recycling other less obvious phenomena and materials that are now wasted.
While we're on the subject of Eutectics take a look at these 12 volt eutectic refrigerators and freezers used for sailboats; the physics of them suggest they are well suited for medical refrigeration for the Congo and possibly, with modification, for biogas fueling. The difference between... eutectic systems and normal aluminum plate systems is amazing (1.82 cycles per day with a run time of 6.7 hours/day vs. 46 run cycles with a run time of 14.4 hours).