The pros call this "cable dressing" . it's the hallmark of a good installation
move TV to brick side of backroom, low couch in front of plants in window? swivel club chair in corner by fire place--How-To-Hide-Your-TV-Wires-and-Cable-Box
Hide wire clutter with plastic shower rod cover You won't believe how simple this idea is! HIde wire clutter with a cheap shower rod cover! What a brilliant decorating hack!
57 Life-Changing Upgrades for Every Room in Your Home - Popular Mechanics
D-Line TV Cable Tidy Cover Wire Hiding Trunking and "I wanted surround sound and a wall mounted flat screen for a while. What kept putting me off was the cables and not knowing how to hide wires.