Used in Telcom, NASA and Avionics a almost lost art of Cable Management called Cable Lacing. Instead of using Zip Ties or Tape a Waxed Coated Cotton String is used for the whole length of a Wire Rack or Wire Harness/Bundle.
In my honest opinion this looks a lot cleaner and better then a hundred Zip Ties and doesn’t leave a sticky residue like Tape does. It’s also pretty darn cheap, just don’t buy the “Electronics Grade” stuff. The 1mm size that is used for Jewelry is cheaper and it is the exact same stuff. You can also use thinner stuff but you’ll have to double wrap the bundle.
I found a little Video on YouTube that covers how to do it. The man in the Video has a terrible accent but you just to need to watch rather then listen.
A few Tips I have with this Method. Have the knots closer then what I have in the example photo. If the Cabling is running flat then you can get away with knots further away but when you go into turns and twists you want the knots closer or it will look like this.
Just like anything new you will be slow and it will look like crap but with practice it will look better and you’ll get much faster.