GLaDOS "cord" ribbon?
I am planning a GLaDOS cosplay and I have decided to alter a dance uniform to suit my needs. To replace the glittery sequin trim on the outfit, I am looking for a ribbon that can pass for electrical cords, a kind that is thick, round, and black. Do you guys know if this kind of ribbon exists? If not, where could I find wire insulation rubber and how might I sew it onto the outfit?