Automation to randomly toggle swtich from group?

Configuration
1

Hope someone can help me,

I have 4 switches in a group, what I would like to do is randomly (maybe every 30 mins) toggle one of the switches in the group at random? this feels like something really simple but I am struggling, hopefuly someone can help me…

Thanks

2

Just to update, I managed to get this working witht he following yaml

alias: Change House Lights
description: ""
trigger:
  - platform: time_pattern
    minutes: /30
condition: []
action:
  - service: switch.toggle
    data: {}
    target:
      entity_id: "{{ states.switch.xmas_buildings.attributes.entity_id | random }}"
mode: single