Get notified when a to-do task is due on Home Assistant

1. Install Local to-do https://www.home-assistant.io/integrations/local_todo/
2. Create an automation

alias: To-do Reminder
description: ""
triggers:
  - trigger: time_pattern
    minutes: /1
conditions: []
actions:
  - action: todo.get_items
    metadata: {}
    data:
      status: needs_action
    target:
      entity_id: todo.to_do
    response_variable: respond
  - variables:
      due_items: >
        {% set items = respond['todo.to_do']['items'] | default([]) %} {% set ns
        = namespace(due=[]) %} {% for item in items %}
          {% if item.due is defined and item.due is not none and as_datetime(item.due) <= now() %}
            {% set ns.due = ns.due + [item] %}
          {% endif %}
        {% endfor %} {{ ns.due }}
  - condition: template
    value_template: "{{ due_items | length > 0 }}"
  - action: script.tts
    metadata: {}
    data:
      message: |
        {{ 'Time to ' + (due_items | map(attribute="summary") | list | join(", ")) }}
  - repeat:
      sequence:
        - action: todo.remove_item
          metadata: {}
          data:
            item: "{{ repeat.item.summary }}"
          target:
            entity_id: todo.to_do
      for_each: "{{ due_items }}"
mode: single

It run every minute, check if a task is due, concatenate the task name, and TTS.