Last weekend I took apart a red sweater that was really soft but shed all over my ubiquitous black pants. I didn't unravel the entire thing, I just took out the seams and then sewed the pieces into two hats, which was fine.
Then, feeling emboldened, I took the scissors to a thrifted cashmere sweater and in doing so realized...I can unravel this and then I'd have a whole ton of 100% cashmere yarn to do whatever I wanted with!!! So that's exactly what I did. Well, the unravelling part, the doing whatever I want with it part has so far consisted of stashing it in the crawl space while I finish up some other projects.