Great if you happen to be or know an electrician, drywall repair expert, and painter. For most of us this isn’t very practical though. I do wish that ceiling router ports were standard on new builds at least and if you didn’t want to use them you could plug in smoke alarms instead.
Depending on how your home is constructed, installing ceiling mounted access points can be a lot easier than you might think.
Most of these APs are powered by Power over Ethernet, so they only require one cable for both power and data.
My current home is a bungalow, and installing multiple access points only required running some network cable round the loft and drilling a small hole in the ceiling for each AP - which mounts over the hole so it can’t be seen.
There’s nothing stopping you from just plopping these on a table somewhere.
The UFO has a pop-out notch on the rim so it can sit flat on a table or wall with a cable running out the side, and the can comes with multiple bottom attachments you can swap out depending on if you want it to rest on a table, be screwed into the side of something, or be mounted on top of a threaded bolt.
I just chose the images that showed the shapes off. It’s not the only way they can be used.