Clothcraft 83+1, you can get 1-4 Wool Thread from Wind Crystal + Gigas Necklace. It works exactly like Yagudo Necklace, except that the yields are greater. (Pearl/Black Pearl vs Bronze Ingots, Wool Thread vs Grass Thread)
These drop from NM in Delkfutt's Tower, as well as the Jotunn, and the lesser Gigas strewn about in Korroloka Tunnel. Which is better for farming? What's your level? Happy hunting!