Cheap and easy method: slit a foam swimming noodle open, jam it over the top of the hangers and rod. Might need to cut a bit more out of the inner area, depending on your hanger rod's diameter.
Those swimming noodles are in use all over our TT.
"The greatness of a nation and its moral progress can be judged by the way its animals are treated." -- Mahatma Gandhi
Czarny, black cat
Rainbow Bridge: Spotacus, Alexander the Grrreat, and so very many more