Over the weekend I did a circular LED layout that works with my PICO board. See http://wiblocks.luciani.org/PICO/PICO1TR-LED-CL-index.html
I need to move the LED pattern and the ballast resistors but the layout routes nicely with the arcs and spokes. I will probably fabricate a few of these on my next design panel (Sooner if there is interest).
(* jcl *)