You aren't a dog show person, are you?

Lots of dog show people have a bunch of dog crates in their homes. They are referred to as "end tables" and "coffee tables" and are covered with cloth. Usually they are full of things like kongs, stuffed toys, and frooming and agility equipment. As Ironraven said, containers covered with sheets can hold a lot of food.

If you buy new furniture, buy with storage in mind.

If you're in a high-density area like SF, I am assuming that the military would arrive at some point and open up a few roads for access. That could be the time to bug out to friends or family, if they're within easy reach.

"Getting together with looters" is not an option. You are competition, and most of them know how to get rid of competition really fast.

Sue