My old man's getting old. Late '70s, early stages of dementia. He lives on his own, and gets a lot of scam calls - so tends to not answer the phone.
His current phone hasn't got any kind of caller ID or display on it. A cordless phone would disappear into the morass of old newspapers and junk mail in about ten seconds flat, along with the scraps of paper he insists on writing phone numbers on.
So... what's needed is a corded landline phone with nice big buttons and a nice big display to show the name of who's calling from the address book.