You don't have to be a Hobbit to live in a low impact home.

This house is straight up bad-ass. It's a low impact woodland home that a son/father-in-law duo built.
These are outlined as the key construction and design strategies:

• Dug into hillside for low visual impact and shelter
• Stone and mud from diggings used for retaining walls, foundations etc.
• Frame of oak thinnings (spare wood) from surrounding woodland
• Reciprocal roof rafters are structurally and aesthaetically fantastic and very easy to do
• Straw bales in floor, walls and roof for super-insulation and easy building
• Plastic sheet and mud/turf roof for low impact and ease
• Lime plaster on walls is breathable and low energy to manufacture (compared to cement)
• Reclaimed (scrap) wood for floors and fittings
• Anything you could possibly want is in a rubbish pile somewhere (windows, burner, plumbing, wiring...)
• Woodburner for heating - renewable and locally plentiful
• Flue goes through big stone/plaster lump to retain and slowly release heat
• Fridge is cooled by air coming underground through foundations
• Skylight in roof lets in natural feeling light
• Solar panels for lighting, music and computing
• Water by gravity from nearby spring
• Compost toilet
• Roof water collects in pond for garden etc.

Check out the link if you want to learn more.
http://www.simondale.net/house/plans.htm