Decided to make a hook to go with https://www.printables.com/model/37187-gothic-lantern for a trunk-or-treat.

I printed with the arm vertical and placed a custom support in the hook portion. This gives a better finish, but will reduce the strength of the hook. It still has no issue holding the lantern with a small LED light in it, but worth mentioning.

The mounting holes are sized for m4 bolts.