You have probably run across this by now…
You can by a coat hook on Amazon that has a camera in it. If you search on there, you will see a whole bunch of them.
Creepers buy these things and put them in places where they want to spy on you without you knowing. So if you see a black or white coat hook check to see if it has that little hole in the top along with possibly another button on it somewhere. It’s up there with double sided sticky tape. If you hang heavy clothing on it, it will accidentally fall off the wall. Then if you feel civic minded, give it to a cop or the manager of whatever facility you’re in.
I didn’t believe it at first because the articles that describe it look like click bait. But I searched on Amazon and yep, you can get them for cheap.