YOU CAN SPIN UP A START9 SERVER RUNNING OVER TOR VERY EASILY
YOU CAN INSTALL YOUR OWN TOR NOSTR RELAY THAT WHITELISTS YOUR NPUB WITH IT
YOU CAN USE A DEGOOGLED PHONE WITH AMETHYST + TOR WITH ORBOT
YOU CAN RUN VPN ON YOUR ROUTER
YOU CAN ADD FIREWALL RULES AS TO WHAT DEVICE CAN CONNECT TO YOUR SERVER