Petzl Zipka Plus 2 and a Petzl e-lite are in my purse.

I'm particularly fond of the Zipka, because of the retractable cord it can be worn as a headlamp, wristlamp or put on a hiking pole or whatever.

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An earlier iteration of the Zipka was a Godsend a decade ago when I was walking home from work and the power went out in my entire neighborhood -- streetlights, everything.

Suddenly couldn't see my hand in front of my face but remembered the Zipka in my purse. Hallelujah.

I also use the Zipka on every camping trip and winter dog walks - usually wearing it on my wrist.