Multi-account containers. Let’s you have 2 different Gmail accounts open at once. Also I try to silo different parts of my life to prevent tracking.

Noscript and tampermonkey too.

Is anthrax just naturally out there for anyone to contract?

It’s more to setup, but I have my keepass auto sync across several devices using OneDrive. Each device has a local copy of the database that is synced with the cloud version using triggers.