Potentially my Mighty Wallet - https://mightywallet.shop/collections/classic-mighty-wallet/...

The rulers on the edge have come in handy the most.

Also, in case you need the law of cosines in your pocket. ;)

Pocket knife. Clip one in your pocket for a week and you will be amazed how much you use it. I always have a cheap Gerber or nice Kershaw on me.

Yep. Depending on if I’m going into the office or staying home, I have two Victorinox pocket knives of which I always carry one. Slicing apples, cleaning dirty nails, (un)screwing stuff, prying out a battery, cutting open packages, uncapping a bottle. All from a package-of-gum sized aluminium tool in my pocket

This. One that doubles as a bottle opener. Something like this: https://www.amazon.com/seller-TAC-Assisted-POLICE-Tactical/d...

My planner. My whole life is there.

Do you have a specific planner that you prefer?

my greyman/lil'basterd kit

Googling led me to this!

https://www.bugoutbagbuilder.com/blog/gray-man-urban-surviva...

What is this?

a small tin or belt pouch with multi tools and odds and ends to use as a macguyver solution to your problems

https://www.youtube.com/watch?v=hhXEScR9b8M

https://www.edcforums.com/threads/grey-maning-a-tactical-bag...

iPhone.

Oh, my Leatherman (Skeletool/Wave, depending on the day).

tight fitting cloth work gloves that don’t obstruct writing

Pencil and paper

Pen

My soul :)