It's a simple job for a human, but surprisingly tricky for a robot.

A company in Japan is trying to teach a pair of machines to bring order to the chaos of child's bedroom, using the same artificial intelligence it uses for self-driving cars and smart factories.

This is part of the BBC's Disruptors series. You can read the full article here.

Camera: Jiro Akiba; Producer: Ben King; Video editor: Sara Hegarty