A weaver in the Peruvian Andes explained to me how she she raises sheep, sheers them, then washes, cards, combs, spins, dyes, and weaves the wool. She dyes the wool using natural materials.
She makes the dyes using urine. Find that odd? Read "Urine, Fleece, and Natural Dyes. Apparently this is an age-old method, although I doubt you'll find it much in practice in the USA.
While outside the weaver's home, I noticed a bucket underneath the house. I found out that is the pee bucket. When there is enough urine, the weaver empties it into her dye pot. Now that's recycling!