A couple of suggestions I'd add -- first, empty your fridge, unplug it, and leave the doors open. The contents will liquify, leak, eat through your flooring, and scent everything in your house -- ruining every dry clean only rug, piece of upholstered furniture, bedding, drapery, and clothing you own. I couple of frozen steaks aren't worth it. Encourage your neighbors to do the same, the smell will travel that far. I still smell that smell when I think of those days.
Leave the door of your washing machine open so it doesn't mildew, and if you have a fabric softener compartment flush it with bleach. Did you know flies like to eat fabric softener and even find it a great place to raise baby maggots? I bet you didn't!
Cover all your drains. Nasty things will fly up and/or crawl out of your drains when the water evaporates out of the P traps.
Ask anyone you think may not have the means to evacuate to come with you. Offer to put them up with you. If they are super proud or stubborn, act like you want them to babysit for you or something. It may sound like a lot to take on, but nothing feels worse than imagining the suffering of someone you could have helped when the worst happens.
