We get power outages every winter, sometimes for a few hours, occasionally for a few days.

We use a wood stove to augment our minisplit all winter, so firewood, paper, fire starters, and matches.

We have a propane cookstove. In a power outage, I use a "clicker" instead of matches to light the stove. It doesn't wear out, have parts/fluid to replace, and that means I can use whatever matches we have for the wood stove. You need 3 gallons of water, per day, per person, so we store 6 gallons and water to flush the toilet. Re coffee? A French press works, if you have a way to hand grind coffee.

We also have a large cooler, that lives out of the way in the kitchen. When it's obvious the outage is going to last, we transfer the most perishable food to it with snow or ice cubes.