I sell stainless steel plates: https://cryptonumeris.com
I always am surprised by why people oppose to HW wallets, they are less than $100 and they’re pretty much impossible to “hack”.
If your investment is +10k and you don’t have a HW wallet you’re walking on thin ice.
This guy created the most unnecessary, slow, impractical and unsecure method to safeguard his crypto to avoid paying $70 to Ledger/Trezor.