So I'm gonna make some. Haramaki is a japanese belly warmer, typically worn by grannies but can be jazzed up and worn very fashionably by anyone. Once again I'm Johnny-Come-Lately over here since it's just about springtime and a belly warmer is no longer needed but so what, I'll use it next winter. I also wish that I had known about it when I was still pregnant. Oh well.
Some commercially sold haramaki:
I'll post pics when I finish my sewn prototype.