While discussing with Peter in the tetrahelix thread I brought out my photos of the heptagonal crown I made some time ago.
I might as well share them here.
My first version, based on the 2-flying-saucers-crash shape
![Wink ;)](./images/smilies/icon_e_wink.gif)
![Embarrassed :oops:](./images/smilies/icon_redface.gif)
As I was looking for a stripped down version I decided to remove a few rods from the outer edge and and I got this rather stylish version: