Looking for a cowl pattern> Sorta Horta is for you! It's quick (aran weight yarn, under 100g) and has lace and very easy texture (purls) to keep you occupied. Although it's written for aran weight, which I think suits the pattern, you could probably use different weights, though the thick yarn does show off the reverse stocking stitcvh bits well. It's a single loop, but again, there's a short pattern repeat, so I con't see why you couldn't knit a double loop, yardage permitting.
I've used an anonymous yarn. My days of losing labels are behind me, but I still have lots left! It's a gorgeous semi-solid colour. I have no idea of the composition, but I can't break it with my hands, and it feels as if it's got some silk or cotton in there. It's a thck aran (about the same thickness as Artesano Aran) and soft for necks. Lovely!