How to configure devices manually with yaml (for example a controllable tablet)

Configuration
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1

Hey!

What is a good approach to setup devices manually, for example, I have a few Android tablets with Fully Kiosk Browser app’s with the HA dashboard.

My initial thought is something like this, where all the rest_commands, switches and sensors are in the same file:

configuration.yaml

homeassistant:
  packages: !include_dir_named integrations

./integrations/tablets/{generic,livingroom,office}.yaml

rest_command:
  tablet_generic_screen_on:
    url: http://IPADDRESS/?cmd=screenOn&password=PASSWORD&type=json
    method: POST

  tablet_generic_screen_off:
    url: http://IPADDRESS/?cmd=screenOff&password=PASSWORD&type=json
    method: POST

switch:
  - platform: template
    switches:
      test:
        friendly_name: "Screen Generic"
        unique_id: tablet_generic_screen
        value_template: "{{ is_state('binary_sensor.tablet_generic_screen', 'on') }}"
        turn_on:
          service: rest_command.tablet_generic_screen_on
        turn_off:
          service: rest_command.tablet_generic_screen_off

sensor:
  - platform: mqtt
    name: "Fully Kiosk Generic Battery Level"
    unique_id: tablet_generic_battery_level
    state_topic: fully/deviceInfo/DEVICEID
    value_template: "{{ value_json.batteryLevel }}"
    device_class: battery
    unit_of_measurement: "%"
    icon: mdi:battery-30

template:
  - trigger:
      - id: "on"
        platform: mqtt
        topic: fully/event/screenOn/DEVICEID
      - id: "off"
        platform: mqtt
        topic: fully/event/screenOff/DEVICEID
      - id: "on"
        platform: mqtt
        topic: fully/deviceInfo/DEVICEID
        payload: true
        value_template: "{{ value_json.screenOn }}"
      - id: "off"
        platform: mqtt
        topic: fully/deviceInfo/DEVICEID
        payload: false
        value_template: "{{ value_json.screenOn }}"
    binary_sensor:
      name: "Fully Kiosk Generic Screen"
      unique_id: tablet_generic_screen
      state: "{{ trigger.id }}"

Is this approach fine, or are there better ways to achieve things like this?