I saw something the other day about a Federal court ruling in favor of States creating their own currency. I seem to recall also reading that some states are interested in creating their own currency.
That would be the first step, and the currency would need to be made out of some sort of precious metal so as to avoid the bullsh*t the US Government has done to debase the currency.
I also think it might be wise to simply stop issuing currency with dollar value equivalents, and just issue currency as a specific weight.
That way we avoid the stupid games of inflationary dollars being allowed to buy much more valuable coins by claiming they are worth the specific dollar value on the coin.
Check out gold backs