I've looked at the top threads here and I've noticed that most people blame the noise floor rising as WiFi devices become more capable, and a few people talking about how to configure the routers or flash the firmware to get into less-occupied frequencies. A few people have described how 5 GHz spectrum is more vacant, but doesn't travel as far, how there are only three channels that don't overlap in the US, and how traffic slows down when new routers have to step down to old protocols.
I don't hear much about the gains that can be made by freeing up one's dependence on WiFi within the home. If your computer is next to the router, running an Ethernet cable to it is a no-brainer, and certainly too obvious for this thread. But video streaming gets more common every year, so maybe these homes have reached the point where it's worthwhile to run Ethernet to the room with the TV in it. And I'm sure there are kids out there who think nothing of running BitTorrent on a WiFi device. Is it worthwhile to move devices to Ethernet, or is that just a lay assumption? Or maybe also too obvious for this thread?
Moreover, I've never heard anyone talk about consumer-friendly methods to block WiFi signals from outside the home. Whenever I ask my network engineer friends about this, they act like I'd have to build a Faraday cage around my entire network with specialized copper mesh. No, I'd just like to do my level best to discourage signals from passing through my exterior walls, so that my traffic doesn't have to compete with weak packets from across the street. My router is close to the north wall, so is there something small I can hang behind the router to attenuate any of the signal through that wall? What about replacing my chain link fence with concrete?