Somethings I think everyone should have:
Alternative power. Solar, Inverters 3 fuel generators ideal. Supply of fuel.
Minimum 3-6 months nonperishable food.
Countertop water distiller... in 4 hours it can turn sludge into pure drinking water. I use 1.5 gallon units.
Have means of dealing with blackouts.
Any meds, get extra... by any means.
Need eyeglasses and put them off lately? Go... get it sorted.
Learn to do things that feeds you, without a grocery store required.
Have means to protect it.