Steel wool and a 9V battery for fire starting. Keep them separate until needed or you will start fires you don't want.I'm gonna be Captain Obvious with this but whatever you've got, make sure everybody knows how to use it.
Paper map for backup. Does everybody know how to read and use a map?
Fire starting materials. Make sure everybody has actually tried and succeeded in starting a fire with that gear beforehand.
Portable radio, etc. Y'all won't believe this but make sure everybody knows how to change the batteries or charge it up if needed.