in the interests of saying something useful instead of idle musing:
We're all fretting about sourcing entropy for our master secrets (seed phrases if you prefer), but what about for the nonces we use...
Alternative method for cold storage. The only cost is a USB stick.
https://tails.net/about/index.en.html
https://electrum.readthedocs.io/en/latest/coldstorage.html
https://tails.net/about/index.en.html
https://electrum.readthedocs.io/en/latest/coldstorage.html