Every now and then I read a story about bank safe deposit boxes such as this. At first, it freaked me out.

Then I discovered seed XOR. Safe deposit boxes are convinient, but if it get's robbed, you'll want a backup.

If you split your seed and use multisig, you can add redundancy to safe deposit box failures. You can bury several copies of part B seed XOR seeds in Australia, but keep part A close to home.

If your safe deposit box is robbed, you're out a plane ticket to Australia, but you won't lose your life savings.

https://www.cnn.com/2021/04/22/us/us-money-laundering-indictment-trnd/index.html