We might be facing a power loss for many days and or maybe weather related catastrophes who knows what lays ahead of us we have to be prepared for any situation.
Some gear are just to keep us sane in case we have to survive a long time like the ipod with some good music, also having extra cellphones is always a good thing.
Owning a cheap or expensive night vision device always gives us a confidence at night specially if you are afraid of the dark...
Always have extra batteries in the house they do last a long time when stored properly.
Ultimately WE are the most essential survival machine not only we can survive by being smart but also by making the right decision whenever needed.