what to do if you have only cash?
nostrademons: Are you in Germany or the U.S?  I don't know much about Germany's legal protections or the stability of their currency.  I'd imagine that given their past experience with hyperinflation, they're pretty careful.In the U.S, I think cash is about the safest thing you can hold, in an FDIC insured account under the insured limit (currently $250k).  Don't believe any of the stuff you read on Reddit about hyperinflation; Redditors are largely idiots and don't know a damn about economics.If hyperinflation does hit, you will have bigger problems than the security of your savings, notably how to get food and how to avoid being killed in a riot.  Your best bet here is the same as if there is no crisis: friends, skills, and a reputation for being a decent human being.The depression-era advice of "neither a borrower nor lender to be" is also appropriate.  In a crisis, the fewer financial ties you have to other organizations, the fewer potential credit risks.  Pay off your credit cards, pay off your car loans, pay off your mortgage if you can, and avoid holding bonds or other debt on risky organizations.