For the record, I finally had some time to go scouting for ring-shaped items. Here’s what I was able to come up with:
Magnifying glass – ItemRight > Miscellaneous
Halo (skewed) – Headgear > Fantasy
Monocle – Headgear > Glasses
Target shape – Background > Shapes
I think I like the monocle best since it would be easy to mask it onto a simple circle shape and get rid of the extra stuff. The magnifying glass isn’t bad either if you can overlook the extra bit there where the handle attaches. The halo would be pretty good in its original form if you were looking at the rings from a steep angle, but trying to turn it into a circle distorts it a lot. And the target rings could work if you used the innermost ring and cropped the rest.
