Always my caribinar. it has:
house keys
Arc AAA
Orange Fox 40 Classic

It sometmes has:
Rescue pouch (Latex gloves and CPR mouth piece and money)
Other keys (for bicycle lock, etc)

This is a difficult question that you posed. Usually, I have my other EDC items (lighter, tissues, cell phone etc). This is a good time to rethink what i ALWAYS carry.