Bitwarden, Adguard-Home/NextDNS, UBlock Origin, Privacy Badger, Disable Flash, LocalCDN(Replacing Decentraleyes), Selfthosted Paperless-ng and Nextcloud instances for storage and documents with seperate accounts for each family member secured behind authelia with 2FA. Docker-Mail-Server instance with catchall emails for each family member. Enabled 2FA for every sensitive account. Private Selfthosted Wireguard tunnel to access local network services publically (behind a CGNAT network). Non technical family members have been instructed to never use real names while signing up for trivial services online. Guacamole to provide remote assistance when required.
Ideally, going by the cancerous nature of the internet in 2021, web browsers should ship with ublock origin, automatic https upgrades, an usable js-blocking toggle and LocalCDN-esque features out of the box. Chrome would never do something like that but maybe firefox could. Improves privacy and usability overall.
