Mount the arm to something (like a desk) and swing it over the couch to lay down. In my case, I can actually pivot it between the couch and the chair on the other side of the desk.
Great for a few hours a day when you want to sink into focus mode. Super highly recommended it.
[1] https://www.humanscale.com/products/monitor-arms/m-81
[2] https://www.lg.com/us/business/desktop-monitors/lg-34BK95U-W
[3] https://www.hekseskudd.com/products/ambidextrous-slim-keyboa...