List all open doors and windows

Home Assistant Template

  - type: conditional
    conditions:
      - entity: sensor.total_open_windows_doors
        state_not: '0'
    card:
      type: 'custom:flex-table-card'
      clickable: true
      strict: true
      entities:
        include:
          - binary_sensor.*win*
          - binary_sensor.*door*
        sort: friendly_name+
      columns:
        - name: The following are open
          data: friendly_name
        - data: state
          name: ' '
          modify: '(x == "off") ? null : " "'

The above uses the custom:flex-table-card and the sensor below to show any open doors and windows.

Template Sensor in Sensors.yaml

    total_open_windows_doors:
      friendly_name: Open Windows/Doors
      icon_template: "mdi:door-open"  
      value_template: "{{ states.binary_sensor | selectattr('state', 'eq', 'on') | rejectattr('attributes.device_class', 'ne', 'opening') | list | count }}"