The thing is... if you are going to bring with you something that cannot be used after getting wet without drying (like steel wool, dryer lint, charcloth etc), just bring two bics. You can make hundreds of fires with one bic after it dries, you can only make a few with a piece of steel wool and a battery. Bics take up less space too. Batteries die after so many uses, steel wool rusts, char cloth needs to be dry and requires additional good tinder to add to it, etc.
There is a difference between packing useful things and having to improvise with what you have available because you didn't make plan. I am not saying there isn't value in discussing the useful techniques we have available to us in the event we didn't prepare, but don't think that packing shitty 9v batteries or char cloth is effective use of go bag space. Those are things you do or make in a pinch.
If this thread is to become one of useful techniques for the unprepared, then I have plenty of useful tricks to add. We could talk about the countless uses for tampons (making fire, plugging puncture wounds, filtering water), fishing hooks made of wood toggles, boiling water with stones, snare techniques, signalling, improvised first aid techniques, local medicinal/useful plants like the antiseptic properties of mosses, the aspirin in birch and willow, the fish-stunning properties of mullien, tapping trees for water or syrup, what trees cambium layers are edible, the wonderful cattails we can eat and use as tinder, spider webs as anticoagulants, fatlighter, the fact that a porcupine is one of the few animals you can walk up to and hit in the head with a club without it running away (they like tamarack, look there)....
The list goes on forever. Your time is better spent becoming familiar with your specific areas resources rather than planning to pack MacGyver style. You don't know what you need until you know what you won't be able to find. Learn that first.