I sometimes bring a bt keyboard to use my phone as a tiny almost-laptop, but mostly happy with something just the size and weight of a phone.

Used to have two phones ~10 years ago. A Jolla Phone was my primary phone with a sim card and ran most non-Google apps. Then I carried around a cheap Motorola Android phone that had no sim card but could run Google Play apps and when it needed wifi I shared that from the Jolla and otherwise it was fully offline and most of the time turned off.

So the phone that was closer to a small laptop was the one I actually used as a phone. Not sure if that is the setup I would go for again or if I would do it the other way around with the Google phone being the phone. If I do the latter I guess something like a very small Linux netbook would work as a second device, it such a thing exists.