I've never seen those hex designs before, and I think they are really decorative. The idea of a quilt block is charming too. I have a weather vane in the form of a lacemaker that was a birthday present years ago. My DH commissioned it from a metal worker near where we lived at the time. I don't have it on the chimney, as I would only be able to see it when I was coming home. Instead, it's on the garage, that I can see from my kitchen window.