304 Stainless Steel Wire Rope Cable 3/32, Black Vinyl Coated - Outdoor Light Guide Wire for String Lights, Clotheslines - 1/16 Inch Overmolded to 3/32 Inch, 100ft

Steel cable may be a more durable option. (This Amazon link is for example purposes, not a recommendation) You can cut them to length and get some clips. It can be done fairly inexpensively.