If you're using LUKS don't forget you can dump/backup the header. It isn't the encryption key but is critical if you accidentally do a stupid. As to the keys themselves, how about convert them to qr codes, print them, and store them in a safe.
I got tricked. Thought this was going to be awesome content with a cool story and OP getting a fun windfall only to realize this is /c/funhole and it was even awesomest content.
A new study from UCLA Health has found that long-term residential exposure to the pesticide chlorpyrifos is associated with more than a 2.5-fold increased risk of developing Parkinson’s disease. The research, published in the journal Molecular Neurodegeneration, combines human population data with laboratory experiments showing how the pesticide damages dopamine-producing brain cells, providing biological evidence for the link.
If you're using LUKS don't forget you can dump/backup the header. It isn't the encryption key but is critical if you accidentally do a stupid. As to the keys themselves, how about convert them to qr codes, print them, and store them in a safe.