#0: Good idea.
One of the easier ways to help older people stay in touch with family, friends, relatives, and others, is by helping them into the social media world. Show them how to use Instagram, Telegram, Snap, or even email on their phone, computers, or tablets. Help them follow people they know and show how to write and comment. If they don’t have a new enough device, perhaps one of your retired ones will do for them to start with.
This doesn't replace the need for face-to-face contact, but it complements it. All of my oldest relatives use social media. I have found that Telegram groups with both young and older people work very well to stay in touch and informed. One of my Telegram groups is comprised of 17 people between the ages of circa 16 and 78. While my grandfather still lived, the oldest member was 98. 🙂 We share photos, videos, stories, and lots of other things. To date, we have shared over 10,000 images and films. Best of all, it's free. 😀