At some stage it's going to happen ...
All anyone can do is to get themselves a woodbased fire that they can cook on ... set it up so it heats your hot water cylinder (wet-back)
have lots of candles and learn how to make them.
you can buy jugs and pots that you can use on the fireplaces.
buy solar powered torches.
get some solar panels on your roof to give you lights.
you can buy battery powered T.V's and radios however the stations wont work sigh.
buy board games and read lots of books.