Get out of your mortgage before the housing market collapses any further. As this site says, if you paid $300,000 for your house and it sells for $200,000, you could end up not owning your house and owing the bank $100,000.
Buy some cheap land in a rural area. Build a house, or just get a used RV. Either way, make sure you own your home free and clear, so you can live rent-free and mortgage-free for as long as you need to.
Go off the grid. Get your own power generator â€” or, better yet, some of those solar helium balloons. Or some wind turbines. Don’t be dependent on the power company to keep all your necessities running.
Cultivate some skills that will always be in demand. Become a decent electrician, handy-person, carpenter or cook. There may not be much need for someone who understands content management systems during a total economic shutdown, but someone who can build a house will always have a place to crash.
Go read the rest and start saving that canned food.