Do you want rope or
wire? What I'm trying to say is, first, what is it you are really trying to accomplish? You want it to look like
wire. Why???? You want to paint it? What color? What does the item have "DO"?? Does it support weight or just hang there and "look like
wire"???? How long is the span?? If it hangs with any weight on it, rope will not look like
wire, it is not as stiff, it will flex, well, like rope, not stiff
wire. Maybe what you want is, as mentioned above flexible water tube or hose.
What I'm trying to say is, first tell us what the finished product has to accomplish, what should it "seem to be", what does it do physically such as support an actor or 50 pounds of laundry or....! Then mention your possible solutions and ask for Ideas.
I'd love to help, but we're a little short on information as to what is the real goal or final product.