Most modern billionaires are just so tacky. Go endow a library. Fund research and get your name on a cancer center. Sponsor an eccentric polymath who’s obsessed with marble. Build a museum. Fund public parks. Back climate research. Create something that outlives your ego.
I don’t like the new subway car displays telling you which car/ side of the station you are closest to. Eliminates the knowledge gap between ball knowers and non-ball knowers