Best job on the planet has got to be a backup quarterback in the NFL. 7 figure salary each year, get to sit and watch high quality sport every week, and if you do have to play, there are zero expectations on you. You can only become the hero. If you’re not, everyone expected that anyway.
In terms of a realistic answer, I’d be a cricket club groundsman. Cut grass, or sit on a roller all day listening to music or podcasts or whatever. If I came in to enough money that I didn’t have to work, but also couldn’t afford to live a jet setting life, that’s what I’d do to fill my time.