I use Google's authenticator on my phone and a 50-line python script on my desktop PC. I store the OTPs in a JSON file and the python script runs them through t

I use Google's authenticator on my phone and a 50-line python script on my desktop PC. I store the OTPs in a JSON file and the python script runs them through the TOTP algorithm and spits out my 6-digit code on the console. I'm less worried about losing my "computer" since I don't own a laptop, plus the secrets are backed up using my normal backup process.