In the US, I would have gold and silver for a backup to USD. In any other country a wad of USD is probably good enough as a backup to whatever shitbuck your banana republic issues.
Shitbucks (unlike Bitcoin) have intrinsic value to humans, in the form of wiping your ass with it or burning it to keep warm QED.
In Venezuela if you want to wipe your ass and you have a roll of toilet paper you should sell the roll. The Bolivar is worth less than TP so you'll get more paper & more wipes.