Hello and welcome,

Lots of good inputs so far. Only real suggestion I have would be maybe a small USB thumb drive (or sd or even smaller a mini sd card) for electronic copies of your emergency binder contents.

For fire and signaling you could use a spark lite and one tinder from the package. Maybe throw in a birthday candle?

I could home brew a small flashlite as part of the kit if modifying the tin is acceptable.

-Eric