What flavor of apocalypse matters a lot. If it’s zombies, ammo becomes critical. If it’s nuclear, ammo is less important and water filtration probably becomes critical. If it’s a gigantic asteroid that blots out the sun, water is easy to find but food is critical.
For an unknown apocalypse, I think I’ll go with gasoline. Not critical in and of itself, but helps a lot more generally with a lot of stuff, being able to power a generator and move camp more easily.
What flavor of apocalypse matters a lot. If it’s zombies, ammo becomes critical. If it’s nuclear, ammo is less important and water filtration probably becomes critical. If it’s a gigantic asteroid that blots out the sun, water is easy to find but food is critical.
For an unknown apocalypse, I think I’ll go with gasoline. Not critical in and of itself, but helps a lot more generally with a lot of stuff, being able to power a generator and move camp more easily.