middle-aged IT generalist guy, United States. from left, lens cleaning cloth, REI 1L nalgene, handkerchief, coffee tumbler, ridge wallet, generic grid lined notebook, Leatherman Signal, Pilot G2 .07 pen, keys for work with included tiny flashlight, and phone case (Peak Design Mobile) to represent the phone (Pixel 7 Pro) used to take the photo.
not pictured: car/bike keys, as the wife has the car today and it was snowing so i didn't bike, and wristwatch because i forget, constantly, that i'm wearing it; it's just a part of me. generic Timex Weekender with a nylon strap. does nothing special but tells me the time, accurately, on a face i can read, even in the dark.
You can tell you're either an IT guy or a professional skateboarder if you have pockets big enough to hold both a nalgene bottle and a coffee tumbler.
This also goes for any dads over 30
If you have room for the state of New Jersey, you have room for a Nalgene.