GPS tracker: stored in a hidden pocket, to track if the bag is stolen. I've had a similar bag stolen before from under my nose, and I'd like to be able to track it immediately.

Air mattress AND sleeping bag: It's a bivvy really, works well with additional thermal layers inside, like a coat or towel or dry leaves. Not enough padding for comfort sleep or thermal ground insulation. A world of difference between a good sleep and not being able to fall asleep because uncomfortable. Especially in survival situation when need to be alert and focused. The ratio between value and cost/weight/size is enormous for me.

Portable Toilet: For use in a car when stuck in heavy traffic, or waiting for accident ahead to clear.

Grappling hook: It is also a gravity hook, to pick up stuff that fell far down a steep hill or into a hole that can't get into. I've had this situation before, don't want to be caught unprepared again.

StunGun/Pistol/Spray: Not everything requires lethal level escalation. Pepper spray is nice for aggressive animals, Stun Gun is a great source of high voltage for various applications beyond immediate personal self-defense (perimeter electric fense around camp). And a gun is for 2 legged animals that need to be stopped from harming me, my family or my friends.

Luxury/Comfort: Yes, I like comfort. It is important enough for me, that I'm willing to invest in it, by having things with me, that I needed before and didn't have.

Water: I have a full bottle of water when I leave home, and 2 water filters. I should also have purifying tablets with me, which I've realized in a different response.

Car or something: It is sitting mostly in the car when traveling, because everywhere I need to go from house involves driving and/or flying. So my EDC is always GHB. I do not see why to choose a duffel over backpack, because I need to carry it around as well.

Solar panel: I was carrying one before. I have 2 foldable solar panels: large 60W https://www.amazon.com/gp/product/B00RFCVR62 and small one https://www.amazon.com/gp/product/B00DD6B9IK. The large one is too large and heavy for EDC bag, and small one is somewhat worthless in my experience. And it's pretty much seasonal, since I'm in PNW. I've opted to carry powerbanks with total of 120Ah, that can power my laptop and all other electronics for 2 days, or just electronics for more than a week.