It might not be something new for WC, but this morning YouTube suggested the great post (making a billion year Lego clock by Brick Technology). Clock is fully mechanical with electrical self winding system.
Enjoy!
https://youtu.be/kRzgCylePjk?si=66nIp1McxHdCL0pH
Thats incredibly cool 🤩
Thank you for posting it 👏🏻👏🏻👍🏻
When the human race has long vanished from earth, this will still remain 🤣