I made this for my old mom in 2018, using a standard Raspberry Pi 3 kit with a 7" screen, and enclosure. A simple python script runs on startup. I never got around to adding reminders and two-way radio, but I did install ssh and vnc so I could monitor it and make changes remotely. It was very useful for a couple of years until her dementia deteriorated further.
If anyone is willing to host the description and small implementation files in a public source repo, then I would be happy to share.