Another useful thing to store as `pass` secrets is credit card numbers / parameters.
This makes it easy to fill in card info online using the same password tools you're already using (passmenu, rofipass, etc.), without needing to go find your wallet, or rely on your browser's form auto-fill database (and worry about hidden fields attempting to exfiltrate that auto-fill data).
I'm tempted to use `pass` to store TOTP seeds as well, but this seems like a bad idea because you'd be putting both factors in one place. Maybe a separate pass db stored offline or something...