I would like to have long, straight, wire that is coated. I cannot think of a way to put a thin (electrically insulating) coating on a wire, while also allowing that the wire will be long a straight.
Long, in this case, is 16" to 36". "Thin" probably means the wire is 1-2mm thick.
I would prefer to twine two of these wires (thinner?), so they are stronger together. This will require I get them straight again. Not sure how to do that without lots of effort. If I got the twining tight enough, maybe I could re-coat it so that it looked more smooth despite the twining.
In any case, I'm open to how to accomplish this, and any degree of hand-making or pre-bought.