For individuals, this MIGHT be an option, though you would really have to consider the implications of storage, anti-money-laundering regulations, and security.

For individuals, this MIGHT be an option, though you would really have to consider the implications of storage, anti-money-laundering regulations, and security. As for transferring overseas, you now have to consider the significant added risk of currency fluctuations, which over the mid-term can easily swamp out any impact of interest rates.