You can now store your value in Fiat with German issued €0 notes!
A long way from the notorious period of hyperinflation we all studied in school, the German economy is percieved as so strong that investors are paying the government to take their money, with sub-zero bond yields (https://www.investing.com/rates-bonds/germany-1-year-bond-yield).
Now the European Central Bank (ECB) has given permission for the general public to buy €0 notes. Therefore, even with high levels of deflation you will not loose any further value. Only 5,000 of these notes have been printed - so don't expect to receive it in change on your next trip to the supermarket!
Full details (link in Spanish):
http://www.elmundo.es/economia/2017/06/27/59520dfc468aebde258b464d.html