Nikon SB-600 bulb shaped flash diffuser

Two diffusers made to fit on the Nikon SB-600 camera flash. One is closed and solid while another has an opening in the top.

Mostly round they have a soft effect like a vanity light. Highlights and reflections from the diffusers appear mostly circular and natural. You could cover the rectangular part where they fit on the flash with tape to make reflections even more circular.

I really like using the version with the opening in the top. It kind of does double duty as a diffuser and a snoot