From my experience doing desktop support at a large hospital: a bulk roll of self-gripping velcro tie, clips to mount the cables under the desk, cables that ar

From my experience doing desktop support at a large hospital: a bulk roll of self-gripping velcro tie, clips to mount the cables under the desk, cables that are long enough to run the route, some creativity, a headlamp and a good amount of patience and scuba gear so you can stay under the desk longer to do the job well.