Keep a torch (flash-light) within reach every night.
I recommend you have an LED torch: i.e. a flash-light with an LED (not a bulb) and use rechargeable batteries.
Flashlights with a small generator are preferred.
Making an Oil Lamp
This craft is a skill to have light at night without batteries. You’ll be more self-reliant with a working skill in lamp-building when resources are scarce. And it’s fun. Make these with your children on your next family outdoor activity.
References & Photo credits
1. Feature photo of flashlight by Scott Stults; http://www.flickr.com/photos/12137650@N02/5962483895/.