[vel0city]

Multiple physical keys in multiple formats stored in multiple places. I've got a few security keys: one on a keyring, one in a locked file cabinet, one locked in a safe. Backup codes are printed on good quality acid-free paper with good toner and then are put in acid-free envelopes or laminated, stored in a safe at home and a trusted family member's house.

I'm far more concerned with an attacker from the internet or destruction from a fire or natural disaster than someone using my computer at my home who happens to have my username/password combination as well.