Whether most of your network connected devices are up and running.
Health of many connected AV devices and light switches (availability may vary depending on manufacturer).
Internet up/down state and average upload/download speeds.
That surveillance and alarm systems are working, and dispatching our team to fix if errors occur.
Quality of audio/video (a connected audio video distribution system or media player may show as online but the audio or video may still be experiencing issues).
Different apps or services within connected network devices (i.e. Netflix not working or Pandora producing an error message within a functioning Apple TV or Sonos player).
Toasters, wicker baskets, toilets, major home appliances (yet), pets, kids, plant life or threats from zombies.