I really love gEEk's "Rotating Hanger for Ties, Belts, Necklaces, etc" - but felt it would print a little nicer on the top surfaces of the carousel arms if they were filleted, which would also make ties slide off more easily.

You can get the top hanger part from their original post here, this is just a remix of the base of the model - https://www.printables.com/model/160571-rotating-hanger-for-ties-belts-necklaces-etc

F3d file included :)