metta8 said'Buy farmland and gold,' advises Dr Doom
Buy farmland and simply live off what you produce, advises Dr Vespa.
Do what farmers do where I've lived: you bulk-purchase and store your own gasoline & diesel for your farming equipment. You have electrical generators against power failures. If the phones go down, or the Internet, it's inconvenient, but not immediately life-threatening. You keep spare parts and can fix most of your own things. Even if you lose the markets for your crops, you can still grow your own needs, including dairy & meat, like the pioneers did. And if things get that bad, you won't need to worry about property taxes, nor money for that matter.