TV screen

The picture of the entity (entity_picture: the cover of what a media player plays, a camera, an image entity), or the picture an attribute of it points to, shows on a screen or a frame of the model, and can light the room in front of it with the average colour of the picture. The screen is dark while the entity is off, standby, unavailable or unknown.

- entity: media_player.living_room_tv
  type3d: image
  object_id: TV_screen
  image:
    lumens: 2
    lighting_lumens: 300
    lighting_direction: positive_z

Option	Default
attribute	entity_picture	The attribute with the address of the picture (since 2.13.3, below).
rotate	0	Turns the picture, in degrees.
mirror	no	yes: mirrors the picture.
lumens	none	The screen glows; without it the picture is lit by the room, as a printed picture.
lighting_lumens	none	A light in front of the screen, in the colour of the picture.
lighting_direction	positive_z	Which way the screen faces: positive_z, negative_z, positive_x, negative_x, positive_y or negative_y.
lighting_distance	800	How far that light reaches, in cm.
lighting_off_state	off, standby, unavailable, unknown	The states in which the light is off.
lighting_shadow	yes	no: the light casts no shadow, and leaves the shadow for a lamp.

A photo frame

attribute names the attribute that holds the address of the picture, so any entity can show pictures on an object of the model: a frame on a wall, a poster, a screen. A template sensor can change the picture every few minutes, from a folder of /config/www:

template:
  - trigger:
      - platform: time_pattern
        minutes: '/5'
    sensor:
      - name: Photo frame
        state: 'on'
        attributes:
          picture: "/local/photos/{{ range(1, 21) | random }}.jpg"

- entity: sensor.photo_frame
  type3d: image
  object_id: Living_frame
  image:
    attribute: picture

A new address puts the new picture on the frame; while the entity is off, unavailable or unknown the frame is dark. The other options work as for a TV: lumens makes it glow, lighting_lumens lights the room with its colour, rotate and mirror turn it.

The addresses of Home Assistant always work: /local/…, and the pictures it serves itself (media players, cameras, image entities). A picture from another site works only if that site lets other pages use it (CORS); otherwise the browser console says that it did not load.