I decided that I could use a scarf more than another shawl. I swatched a few patterns that didn't really please me. I love the colors of this yarn, but they do fight with a lot of stitch patterns. They remind me (in a good way) of tree bark and lichens. So I finally settled on this (you can click the picture to make it big).
To me, the pattern definition shows up a little better in the picture than in real life. I should note that this is not a cable pattern. It's formed with yarn overs and decreases. On slightly larger needles, in a solid color and blocked hard it might look sort of lacy. As is, I'm going with subtle texture.
This is the chart I came up with. I repeated Rows 1-10 three times, then 11-20 three times, then 1-10 3x, then 11-20 3x, and so on.
(can also click to make bigger)
I'm actually working on 67 stitches, repeating the sections between the vertical red lines. Also, it's a bit fiddly to reposition markers between Rows 10 & 11, but worth it.