I save old phone books and catalogs for emergency TP since we’ll be composting humanure out back (don’t need to worry about flushing it).
BTW, my plan is to buy a few tons of beans and rice. I will have my employees vacuum bag them in 4 oz., 8 oz., and 16 oz. portions. Voila! The new currency of the People!
The last time we had a Hurricane which knocked all the power out, it stayed off for 9 days hers This was in September and it was still hot. Gas was available, probably because the stations had generators.
My Father was 88 and in failing health. I was able to keep water in his house because he had wired the pump many years previously to run on a 220 volt generator. Not enough to run the AC but we could keep his freezer and refrigerator cool enough to get by. We opened all the windows and I was surprised how well he held up to it.
I faired OK even though my central AC was also down. I had a little window ac unit and could run it for several hours before the fuel ran out.
Two things which came in handy and the stores kept in stock some how were baby wipes and larger moistened wipes. You could take a fair bath with them, especially if you finished up with the antiseptic ones.
I like where you’re going here. I haven’t considered vacuum-sealing rice due to the cost of the bags - but if the rice is then good for decades, it might just be worth it.