When I saw this circular needle organizer I was amazed: again a very simple and yet very effective idea.
You can get the pattern for the circular needle organizer (regrettably only) at ravelry for free.
Links:
Circular Needle Organizer (ANGLE VIEW 2)
Free pattern at ravelry (“Circularity” Needle Organizer) (more pictures there)
via: DIY Hanging Circular Needle Holder (more pictures there)