It doesn't always work, but it did this time.
Then I saw Anne Kuo Lukito's Weekend Shawl pattern, and thought, why not? It looked like a pretty simple pattern which wouldn't overwhelm the tweedy yarn — and I could always use a little wrap. I had no idea how much yarn I had, so I chose the Medium Lace size. As it turned out, I could have knit the large size and still had yarn left over, but who knew?
I discovered towards the end of the Saturday Lace section that I had tons of yarn, so I knit a few extra repeats of each of the lace patterns. I bound off last night, basically when I got tired. I still have a lot of yarn left, but I wasn't going to rip back and knit more stockinette, so it's done :-) And very warm and cozy indeed.