Offline alternative to a Google Home Hub or Amazon Echo Show?

Is there a configuration of parts that could create an offline alternative to a Google Nest Hub or Amazon Echo Show?

Something with:

  1. music quality speaker
  2. touch display (possibly ambient light and color adjustment)
  3. microphone and camera

Then capable of receiving basic voice commands for the system, tiles for touch controls, rom to room video/audio intercom, and displaying local CCTV cameras without needing internet. Basically everything would work locally except literal outside communication tasks like voice or video calling to someone on the outside.