It has already happened

Tea bricks were the preferred form of currency over metallic coins for the nomads of Mongolia and Siberia. The tea could not only be used as money and eaten as food in times of hunger but also brewed as allegedly beneficial medicine for treating coughs and colds. Until World War II, tea bricks were still used as a form of edible currency in Siberia

Money can be anything.

https://en.wikipedia.org/wiki/Rai_stones https://en.wikipedia.org/wiki/Tulip_mania