When on a well: last thing, after all available underwear is washed, fill the washer with water. It is a bit dodgy to bail out, but if the power outage lasts for a while it provides one extra resource to dip out washing water. Have enough charcoal on hand if one owns an oldfashioned outdoor grill. Another source for hot coffee. If you are like me and grind your own, grind some preemptively - it will loose some aromatics; but better that than withdrawal headaches.

Have extra cash. The money mouths and electronic credit card scanners are also a fail without power.

Fill the car with gas. The last time I went over a week without electricity it got a bit worrying towards the end for those who had to drive any distance