There was a post on reddit where a user /u/VergingRivals posted a thread needing help on getting the this monstrosity (posted above) on how to get his desktop cables in order. I was in a similar situation not too long ago, albeit not as bad as this but it did take some time to get everything organized. Both my desktop and especially the TV for my game consoles were a freaking fire hazard so I wrote up a response on how he should get started in cleaning up his setup. Below is my response to his dilemma.
I had a very similar situation to yours… well not as bad. As some other people mentioned, unplug everything. To take it a step further, unplug everything, clear off all your desk. Pair the cables that go with each device.
Decide which devices you use in a regular basis and which ones you hardly or never use. Place the devices you do use back in your desk first, do not add the cables yet until you have all the devices you need. I discovered like 3 things I don’t use anymore… like a WiiU I had on my desk, a usb hub, extra game pad, and an egpu that i barely use since i switched to a PC for gaming instead of using my Mac.
Now, one by one, connect the cables to each device, without plugging them in the outlet / surge protector.
Once you do that, have all the power cords routed in the same direction towards the power outlet. If the are too long, fold them to shorten the length and zip tie.
You can use zip ties or to make things easier, pick up one or a few of these https://amzn.to/2xs47Ms and it will help hide the surge protectors and lengthy cables. Just remember that when you shorten or fold the cables you do it towards the plug so you can place it in these cable management boxes.
I’ve never done this before doing it myself a few weeks ago but these steps is what made the most sense to me and I had some trial and error along the way. Hope that helps!
And here’s a look at my setup!
By the way, before anyone freaks out, those “black bars” are built in SPEAKERS on my display, not a resolution issue!