When my boys were young I decided to make a denim coverlet for the mattress in the back of our van.
I had the "bright" idea that since jeans are usually made with flat fell seams, that I should put it together that way. Intersections of seams were interesting to say the least. It never got beyond lap quilt size. Wonder why? Lol! Anyway it was great, just as that single layer of denim (plus lots of seams).
Am collecting denim pieces to make another but I'm going to use regular seams this time! And thinking about making it a rag quilt.