For a number of reasons the idea of storing paper notes in a bank deposit box is unappealing to me.
Therefore, I'd like to know what recommendations PMG has for storing them otherwise - personally - either at home or in a private place of business like an office.
The three main well-known risks are theft, fire, and water. I've yet to find a robust, well-reviewed, consistently-tested and fully-certified safe that excels at safeguarding against three while also preserving the contents intact for indefinite stretches of time; it seems one has to give one up in order to strengthen the other two protections and/or to prevent internal humidity from accumulating.
Could you please advise?