I don't own a smartphone. I carry a flip phone so people can contact me (and vice versa) if there's a need. I carry around a 3"x5" Rhodia dot pad everywhere I

I don't own a smartphone. I carry a flip phone so people can contact me (and vice versa) if there's a need. I carry around a 3"x5" Rhodia dot pad everywhere I go. If I'm ever really bored and not near my computer, I always have a handful of math problems on my back burner (generally open-ended) that I can break out to entertain myself. If it's a really long wait, though, like at an airport, I usually try to come with a book or something, since there's always the possibility of hitting a wall on the math. I don't feel isolated. I and most of my coworkers are on-site most days, so I have plenty of in-person interaction at work. I also have regular Zoom calls (on my computer) with my few close connections.