A super fun knit!
The Inifnite Parallelogram Cowl by Beth Whiteside calls for two skeins of Cloud, a soft merino/alpaca blend with great stitch definition.
Neutrals more your thing? You can use two skeins of Eco Cloud.
It's knit on size US 9 needles.
There are instructions for knitting it flat or in the round.
This pattern is available as a PDF download.