Editing some sort of magazine or journal 3 or 4 days a week - in my last job one editor role was 4 days a week - while I was there the editor left and was replaced by a lovely man who had been made redundant from a journalism role he'd held for decades and he'd been jobhunting for nearly a year since because he was in his 60s and no one wanted to hire him because of ageism, which was so unfair. He did the job, which was interesting and not stressful, for 4 or 5 years then retired - it was the perfect job to lead into retirement. So I often think something like that would be ideal!