Wool carpet – rapidly renewable resource resistant to stains, fire, moisture, dust mites, bacteria, and mold.
Seagrass – fast-growing, smooth, and anti-static fibers available only in natural hue.
Sisal – easily dyed fibers are versatile but not highly stain resistant.
Coir – coarse with a naturally rustic appearance and feel. Good for entranceways and other areas used with shoes.
Mountain grass – soft but durable.