Dear Stewart,
"Sandals Bye Bye" promises children that they will never pick up anything that has been washed away in the river. It was created by an NGO advocating for preventing drowning so that children can learn how to live with water early on. Although the circumstances may be different, I hope it will be helpful.
https://www.youtube.com/watch?v=aHJ2q9SDxq8
Sorry, it is in Japanese. But you can get the image from the video.
Kind regards,
Hajime
CHIFA profile:
Hajime Takeuchi is a professor at the Bukkyo University in Japan. Professional interests: child health, child poverty, child wellbeing. takechanespid@gmail.com He is a CHIFA Country Representative for Japan and a member of the CHIFA Steering Group (child health and rights) http://www.hifa.org/support/members/hajime takechanespid AT gmail.com