[txcwpalpha]

When possible, I completely avoid services that use SMS 2FA. If given the option, I always opt for authenticator apps or codes-via-email 2FA, in that order. I use SMS 2FA so infrequently that I've never encountered a situation where I needed to get a code SMSed to me while abroad.

I store my printed backup codes for most of my services in an encrypted file in my Dropbox (encrypted with a different password than the password used for Dropbox).

I then also have printed backup codes for my primary email account and for my Dropbox account that I carry with me on an unmarked piece of paper stashed deep in a semi-hidden pocket in one of my bags. I also have printed backup codes for my email and Dropbox stashed in a semi-hidden place in my home, with the thought that in a last case scenario (or I lose my bags or something like that), I can phone my roommate and have him read me the code.

It isn't perfect and I feel like it could be improved, but so far it works fine.