Another ancient material, wattle and daub is essentially the first drywall; drywall was made to replace plastered wood lath (thin strips of wood nailed to framing). Before there was wood lath over stick framing, people made walls of woven sticks, reeds, or other similar material — the 'wattle' — and plastered it with clay or manure plasters — 'the daub'. Not structural, this is generally an infill wall panel technique. Not very insulating, not for exterior use. But lightweight, and cheap.
Cordwood Cabin (with 24 thick walls) makes it energy efficient and fortress-like