Maybe 7 years ago I set my parents (late 70s) up an old PC with Linux and a Gmail account. I was living in another continent so needed a way to send photos to them. Before this the most technologically advanced thing they had used was a VCR - and even that they had issues with. I was expecting they'd try it for a week then get frustrated and never use it again - and probably not say anything until the next time I visited.
Well the opposite happened, they really took to it. My dad even setup an online store trading LEGO. Yes of course there were issues (it took maybe 3 months of video calls to explain how to copy and paste), but they got there in the end.
The other week my uncle (same age, they are twins) talked through setting up my father on Zoom and he joined in a video call with a social group they went to. My mother doesn't use the computer as she has arthritis (and I don't think my father let's her :D), but flicking through Google Photos on an iPad lets her keep up with the grandchildren.
Just one knob to turn it on and adjust the sound.
My other grandma have an iPhone that she barely know how to use (she still have the old one on the wall she love). I first call her, than tell her to tap the green button if she she want to use camera (switch to FaceTime).
This works great for us to keep contact.
Though both of this is solutions only allow us to initiate the contact. Here the Yayagram is brilliant!
The advantage over those IoT picture frame products was that I could use any display I wanted. A cheap 32" TV was perfect. This was key as her vision degraded. The approach also allowed anyone in the family with email to send her photos, no proprietary apps or accounts required.
She passed away mid-Covid and I didn't get to see her in her final 6 months, but she always bragged of her "picture machine." I think she was the envy of many of her fellow nursing home residents!