Living in disaster prone Australia, we have government guidelines for emergency kits.
Although my strategy is to run away, we are well prepared and I keep extra torches, BLF edition SA-22s, Eneloop AAs and chargers to suit and have solar panels on my 4WD.
If necessary I can rustle up some old incan bulbs and some stiff wire to loop over a battery, like we did when we were kids.
Cyclones and bushfires are the most common disasters here, they are localised and in my experience there are rapid, massive community efforts to help those affected.
If there is a zombie apocalypse odds are high that I’ll be zombie.