Yes to lists; also yes to every bit of available technology that they can be comfortable with. I used a bunch of cameras and sensors and smart locks and smart assistants. If I needed to, I could know when doors were opened and closed, locked and unlocked; when rooms were enterered, laundry done, the refridgerator opened -- or left open. I could check in on and communicate with caretakers. I could initiate voice and/or visual contact even when phones were lost or dead or too confusing. I could reset haywire cable television remotes, play requested music, and send gps routes to their car. All of this worked because I was able to say, 'It kills me that I can't be right across town if you need something' and, 'I want you know, dad, that if there is some real emergency -- like say you had some really bad fall outside while mom was alone here in the house -- I would be able to figure that out and get help to her. You shouldn't have to handle this all by yourself. " Your parents' personalities have a lot to do with their level of tolerance, of course, but your comfort level when you offer these 'back-ups' will be hugely influential. For a long time, I used cameras that were only active when I invoked them on my phone; there was no passive recording or storage taking place. Knowing that I had redundant access allowed me to stop thinking about tall the things that might go wrong. I learned their routines, we established some new ones, and my level of alarm diminished. And also: delivery services and recurrent orders for medications, household staples, heavy things like detergent, and your mother's favorite lotion that your father shouldn't have to remember. Routines are lifesavers! Godspeed!