I think those Chai (sp) require fuel? Maybe I'm wrong, on DaveWest youtube you can easily learn friction fire (fire rolling) and other methods when resources are low. He's a good teacher.

The greatest asset you will have is a desire to make it and to improvise, use what you have stay positive.

Remember water filters freeze, keep them warm if cold out, so learn basic filtration and boil the water too

If you bug out with vehicle plan ahead... You'll need a water source, and less people the better...

And all fat sources you will need, fat is your friend. We should all be putting on healthy layer of fat now. Balance don't go over board..

Moderation is the key, some say, of life... God Speed, you won't be alone.

May you walk in peace and favor...