"wire wrapping wire" is commonly used in electronics work for temporary and experimental work, the reason it is called wire wrapping wire is because the wire has a short section of the insulator stripped off then tightly wrapped/coiled around a conductive peg. This makes prototyping a quick process because there is no need to solder the connections which can be "unwrapped" easily for circuit modification. Common suppliers of "wrap wire" would be Fry's electronics, Digikey, Mouser, Newark...etc, including Amazon and fleabay. Wrap wire comes in various gages and many colors of insulation. You would only need to buy one spool of your favorite size/color to have a virtual lifetime supply.