I wanted a wall mount for my son's lego lightsaber by @3DPrintingWorld (https://www.printables.com/@3DPrintingWorld), so I modified the 10x Lego hand from the Big Santa Lego by Quist to stick out of the wall and hold it like a minifig. It fits decently well.
The author remixed this model.
I used the hand from the Big Santa, chopped off the back and added a screw hole for wall mounting.