Finished the creeper for the Elf yesterday. More fiddling with plastic canvas than I'd like, but the boys love it. Learned (properly, finally) how to crochet in joined rounds. Couldn't get the seam invisible and there's still a slight diagonal to the work (you can really tell in the second pictures) but it's an improvement all the same.
Used this pattern and some random sock yarn held double. Ravelery notes here.