Construction

http://www.youtube.com/watch?v=EBkv5jjjhJ0&feature=related

Earth bag house
http://www.youtube.com/watch?v=yeBjHCKkTxg&feature=related

http://www.youtube.com/watch?v=YdVSoSd9Frw&feature=related

Eco-tecnologia

 * http://www.eco-tecnologia.com/portal/ Build with soil, rubber tires and PET bottles.
 * http://www.eco-tecnologia.com/portal/media-download/file/3-taller-eco-tec pdf shows rings of barbed wire, bottles tied with string and clay/mud as mortar, saving on costly cement.

http://www.youtube.com/watch?v=BVCY3n8Tvjc Pet bottles filled with sand and used as bricks, held together by cement by Eco-tecnologia.

PET foundation
http://www.youtube.com/watch?v=rGcdStK0yBc Square slabs of stone joined with 4cm width cement, considerable savings over pouring concrete foundation. PET bottles place on top for residence.