Multi sig. Distribute keys among HW and location. Leave a treasure map incase you die unexpectedly.
Discussion
You can distribute the laminated encrypted QR codes and make as many copies of each. Better than traditional hardware multi sig. Lose keys for two devices and you are hooped
Yes that's a great option.
The second best option.
The main (and only) flaw is that you have to trust others with two of your keys. Or you have to have traces of bitcoin laying around your house.
Encrypted and distributed backups solves both.
