I locked myself out of a 15-year-old email, thus locking myself out of numerous services. There isn't really a good solution to off-site storage, not in a secure way anyway. I don't live in an apartment, so I keep everything at the other end of the garden locked away. It's interesting to see how all the services layer upon each other, if you lose access to x, you'll lose access to y. I print my backup codes and lock them away.