I have 10 skeins of very rustic single yarn, worsted weight. It's been sitting in my stash for over a year and I couldn't decide what to do with it.
Now it's going to be an oversized cardigan that should be more than warm enough as outdoor wear most of winter as long as it doesn't rain too much. Mistake rib creates lots of volume, a lot like brioche, without using the yardage (and weight) of brioche.