I use Paracordplanet paracord in my telephone restoration and testing hobby. You can combine it with those two-opening lanyard clips to make inexpensive quick-release tie-downs. You can hollow it out and re-stuff it with wires to make antique-looking handset cables. You can really use it as a tough protector for any cable, MUCH cheaper than buying a cable with the wires in it and you can select exactly what wires you want. The ends melt nicely to keep it from fraying once you cut it to length. You can crimp various things onto it to make it stay. Or, what I do, I crimp it with a metal clip and then use a heat gun too and it forms a sealed end that you can also clip to something. And the price is right. I've bought several times and will buy again!