I carry a powerbank and various USB C adapters so if someone’s device dies I can help them out. It is a lot cheaper and smaller than carrying around seven different cables.
On top of that I carry Tylenol and bandages.
I used to carry a full first aid bag but kept forgetting to restock on supplies.
EDC:
Keys, wallet, phone.
Utility multi-tool.
Small note pad and pen.
I have a Swiss Army Card, it has a scissors, small knife and other tiny gadgets.
Oh, and a Light Saber! [pushes button and humming sound starts]A EDC thread!
Utility key with integrated bottle opener knife scissors etc on my keyring.
In my purse: power bank, USB cable, gaffer tape, face masks, alcohol, paracord, glasses, hat, headphone, screw top pen.
Nice to have medication: a few anti-diarrheal pills: and anti-inflammatory: and some fun pills
What kind of fun pills are we talking about? Benadryl so you can keep in contact with the Hat Man?
Band-aids. They fit easily into your wallet, taking almost no space. You’d be surprised how often you use one, either for yourself or someone else.
Hand sanitizer and a small bar towel for if anything needs a light cleaning.
There’s a community devoted to this very question!
Aspirin for random headaches, a small sunscreen bottle to reapply throughout the day (I live in Ecuador at 3k altitude, skin cancer is a real concern), a charger with a usb c cable, a micro b cable, a mini b cable and a lightning cable cause you never know. A Bluetooth gamepad for my phone to play gamecube games when in have some time to kill. Scotch tape, silicone glue. Usb c otg, micro usb otg. An external 500gb hard drive, a waterproof poncho because I alwayd misplace umbrellas. A powebank, 2l bottle of water for the whole day. Those are some of the things I always carry on my backpack
Multi tools are great for a a lot of purposes. A more oddball one that has gotten me many thanks is a high quality, 20a, 10ft extension cord with 3 outlets. Not a power strip or anything, just 3 outlets. Used it in airports many times to split the power at rare outlets. Helped friends running a stand at a a farmers market when there were literally 1 ft short of being able to plug in. It’s been useful enough times it just lives in my backpack.
Sheath knife around neck. Originally for self defense, but way useful for other things.