Not heaps, although I should probably do more than I do. Generally speaking, on Saturday mornings:

• Between 2am-4am, Watchtower on all my docker hosts pulls updated images for my containers, and notifies me via Slack then, over coffee when I get up:
  • For containers I don't care about, Watchtower auto-updates them as well, at which point I simply check the service is running and purge the old images
  • For mission-critical containers (Pi-hole, Home Assistant, etc), I manually update the containers and verify functionality, before purging old images
• I then check for updates on my OPNsense firewall, and do a controlled update if required (needs me to jump onto a specific wireless SSID to be able to do so)
• Finally, my two internet-facing hosts (Nginx reverse proxy and Wireguard VPN server) auto-update their OS and packages using unattended-upgrades, so I test inbound functionality on those

What I still want to do is develop some Ansible playbooks to deploy unattended-upgrades across my fleet (~40ish Debian/docker LXCs). I fear I have some tech debt growing on those hosts, but have fallen into the convenient trap of knowing my internet-facing gear is the always up to date, and I can be lazy about the rest.