+1 iPad.
My stepdad got one for my mum last Xmas (I had to shop for it of course) and she’s rarely off of it now, Facebook and email plus god knows what else. Easy to use so I get very few phone calls, as opposed to the almost weekly ones about her PC before that. My step dad is particularly please as mum now spends all evening on it instead of talking to him, so he gets to sleep on the sofa without the constant tutting.
They even went out and bought a new printer recently to replace the one I bought them 15 years ago. I didn’t find out til she told me it was all set up and working – plugged it in, turned it on, and the iPad found it straight away (as would other devices no doubt).
Agree with the setting up an email account you can control.