Waterproof matches and / or a dispasable lighter (along with tinder) are probably a more useful fire kit for the type of folk you are aiming your kit at.

A firesteel would be tricky for a first time user, "everyone" can use a match or lighter (which is why it is good to include both).

I'll add a "plus one" to the instruction sheet too. Very important to feel like you are doing the "right thing" when you are lost and worried

And I'd add some kind of hard sweets /candy too, nothing like a bit of sugar when you need it ! (Oops I see LesSnyder mentioned that too)

A bandaid or two