This. Go ahead and tell everyone that you are worried about your mother and would like to see her anytime and check on her for your own peace of mind. Post a clear, preferably large, sign up front that there’s an active camera in the room. But do not insist on it. That’ll tell you all you need to know about the staff very quickly.
For the camera, use a regular old wifi-enabled baby monitor (App-controlled for best results) and connect it to a mobile Internet router. These routers have internal logs - learn how to access them, then check them (remotely, after setting up security in them) at intervals for suspicious reboot events.
Frugal challenges, forcing myself to use my bicycle instead of my car where possible, declutter my belongings (why do I even have all this crap I never touched for the last year?!) and trying out weird things in general at least once (like throwing things at the wall and see what sticks).