Ending inflation by abolishing the Fed, a central bank of any kind, repealing the current legal tender laws, getting the government entirely out of matters of the economy
Probably the worst of the many bad aspects of an inflationary economy (and one with a central bank is always inflationary) is its effect on savings, which is 2-pronged:
Inflation discourages saving and encourages spending of what people earn, and
It destroys the value of accumulated previous savings over time (which is part of the reason for point 1. above).