Got a new desk recently. I actually switched from a sit-stand desk to a regular 4-post desk (I only sit at my desk so this is ok, but the sit-stand desk was useful for figuring out my ideal range re: tabletop height).
I decided against spending a lot of time cable managing, but I also didn’t want a jumbled mess. So I employed some leftover velcro that was laying about, and it turned out quite nice:
This is what it looks like underneath. It took a total of 45 minutes to do this, which includes a 15-minute cookies and milk snack break 
As you can see, I also decided to trial placing my monitor off to the side, so it’s not the focal point of my desk. I read and write and use my laptop at my desk, and this has been a nice change so far. It opens up the “air space” of the desk quite a bit.