For my (post) Black Friday shopping, I bought our family a Nucleus Intercom 2-pack. It was an Alexa deal the other day, $300 for the pack instead of $400. It's basically a pair of limited tablets, with optional wall mounts.
https://www.amazon.com/Nucleus-Anywh...ywords=nucleus
They work via wifi so your sets can be spread anywhere in the world. We have one at our elderly parents, so we can check in on them visually more easily. The other is on the main level, so we can use the phone apps to check in on our daughter. They also have Alexa built in.