I understand. I don't get into the sculpture thing either. I do love wind spinners, and some of them could be mounted on a stump to raise them up a bit.
Plants are probably your best bet. You could drill more holes in an appropriate pot, and then mount it on rebar on top of the stump. Just have a plant that drapes and hangs and it would look great. There are quite a few hardy ferns that could be used in your area. They might brown up in winter, but then could be trimmed, and grow back quickly in the Spring.
