>-

  {% set brita_filter    = is_state('binary_sensor.brita_should_change_filter', 'on') %}
  {% set purifier_filter = is_state('binary_sensor.purifier_filter_needs_change', 'on') %}
  {% set purifier_water  = is_state('binary_sensor.purifier_out_of_water', 'on') %}
  {% set has_tasks       = brita_filter or purifier_filter or purifier_water %}

  {%- if has_tasks -%}  {{
    [
      "You have some tasks.",
      "Here are the tasks for today.",
      "You have stuff to do."
    ] | random
  }} {% endif %}

  {%- if brita_filter -%}    Brita needs filter change. {% endif %}
  {%- if purifier_filter -%} Purifier needs filter change. {% endif %}
  {%- if purifier_water -%}  Purifier needs water. {%- endif -%}