Good stuff to have on the shelf:
Canned tuna.
A couple of boxes of Fiber 1 Protein power bars.
A couple of boxes of salted Matzoh. Just keep them in case of emergency
A few MREs (Meal Ready to Eat) that you pick up at a surplus store for $5.
Spam,
Canned veggies.
Peanut butter, Jelly. That combo goes great on the matzoh.
Canned chunk chicken breast. Goes great with matzoh.
Some leftover Halloween/Christmas/Valentines Day candy.
Also have a few of those ridiculous 3” diameter 9” tall candles that people give as gifts and are never used and end up at Goodwill. That will light up a room for days and give a minuscule amount of heat.
And it would not hurt to have one of these generators and 5 gallons of gasoline.