Detail of a boro (rags) futon cover panel. I've always loved these old patched futon covers and garments which are left over from a time when many people lived in poverty and every scrap of fabric was valued and re-used. When I first started out 'boro' was a dirty word, now even 'boro fashion' is a thing, and prices for old original pieces have gone up accordingly. The trick is to watch out for non-authentic pieces and that will become harder as prices go up even more.
(Four years ago I wrote this post about boro. In that time attitudes in the Japanese textile market have changed and the term 'boro' seems to be widely accepted now. )