I cast on this “design as you go” project about two weeks ago as a filler while trying to figure out what I want to knit next. I’m pleased with how it turns out, and a center-pull ball fits perfectly (yay!) but I may need a larger version for the center-pull skeins I use sometimes. Those don’t really fit properly.
On this second view, note the color of the bottom. It is different because I was using up scrap yarn.