Export your OTP database to an (optionally) encrypted file on a USB stick and put that in a lockbox/somewhere safe. If encrypting the stick/file: make sure you use a memorized/written down password.

You can set up a VPS and tunnel that to your minecraft server using wireguard some iptables magic if you’re into Linux.

What’s the deal with airplane food though?

After updating my uBlock lists to the latest version the popup no longer appears. Something to try out.