Wireless is a trap (2020)
I wanted wired Ethernet in my office but didn't want to punch holes in the wall. Luckily I have an old "central vacuum system" that as far as I can tell has never been even powered on, many years before I bought the house.I tied a ping pong ball to a piece of string and used a vacuum cleaner to suck it through the pipes, then used the string to pull a stronger rope and then the Ethernet cable. So now my Ethernet goes from my office to the wireless router via the vacuum ducting.