Some un-banked people use sneakers (eg. Air Jordans) as 'stores of value' Source...

discussedbefore · on April 2, 2018

How Tide Detergent Became a Drug Currency

https://news.ycombinator.com/item?id=5023204 (2013)

orf · on April 2, 2018

Are sneakers bit larger, bulkier and harder to store than cash? If your wearing a pair I guess not, but then your stored value is diminishing with each step.

stcredzero · on April 2, 2018

your stored value is diminishing with each step

This is a plight of poor people, if not the plight of poor people, since time immemorial.