A friend of mine has a backpack that's straight out of a super hero comic. You'd be like: "Shit we need a...", and she'd just rummage through it and pull some random thing out. She had multi-tools, multimeters, adapters, etc. She's a real-life super hero.
Maybe I'll write up a better list, but a few things off the top of my head: multitool/SAN, USB power bank, headlamp, snacks, water bottle, layers, hobby (I usually have drawing/watercolors and spinning/knitting with me), multiples of cables/headphones, first aid kit.
I don't think so but I wondered the same thing. :) I don't think I know him. I did a lot of the electronics for Flaming Lotus Girls 2011-2016 so sometimes people recognize me because of that but I have trouble placing them.