Note the sofa arm wrap is shaped for the track arm of the sofa. "C" shaped, it wraps around the sofa arm providing a stable surface for drinks. A perfect and easy DIY project or you can buy one on Etsy for 300.00 for a made-to-measure wrap. I know which one I would choose.
Every seating area, whether it is a sofa or chair needs a place to rest a glass or plate. The now iconic "C" shaped Parsons style table provided that and more. Modern styling and functionality made the table useful. The table was able to slip under the sofa and come close to you for working or eating.
Happily, the table is available in many materials, finishes and price points. The popular design is now available in colours, clear acrylic, different metals, and even with a reclaimed barn board top.