Bottom left of the seesaw imagination could totally work. I was actually super drawn to the yellow in Papersmiths. It could be nice to have colour play like that in public furniture.

Okay, you said if there is an artist, architect, designer's work you find particularly interesting, share in the comments. So here goes. Your take on the see-saw reminded me of the design collective Daily Tous Les Jours. Do you know them? They do a wonderful job of conceptualising interactive public installations. 21 Balançoires is a project where they designed musical swings that harmonise when the users work together to produce sound. I think you'll like it :)