Modernflame
Flashlight Enthusiast
The Prometheus Ti clip fits perfectly. I can also verify that the Malkoff pocket clip w/lanyard attachment works. Both of them require the fitment O-ring. Both of them also have a small, but noticeable effect on the movement of the High/Low tail cap, which won't be an issue with your Bones. The Prometheus Ti clip is sleek and unobtrusive in the grip, but I can't say the same for the Malkoff clip. However, the Malkoff clip is cheaper and, in my experience, has slightly better retention.
There may be other options, but I've only had direct experience with these.
There may be other options, but I've only had direct experience with these.