“Michael Joaquin Grey invented the Citroid System and the ZOOB play system in the 1990’s as a new modeling paradigm and pedagogic toy to learn and play with the language of complex and emergent systems. Powered by the notion that “What we play with as children informs how we communicate and create as adults” , the award winning ZOOB play system has informed and inspired a new generation of creative thinkers with this social sculpture.”

The MIT SOFT Rockers are smart, clean energy charging stations disguised as outdoor rocking lounge furniture.  Unlike conventional ‘hard’ urban infrastructure, The SOFT Rocker leverages its environment in a dynamic manner by using the human power of balance to create an interactive 1.5 axis 35 watt solar tracking system.

Given that the rubber surface of the plaza will automatically bring to mind playgrounds, are there ways to acknowledge this explicitly and incorporate elements of the “flow of joy” a la Csíkszentmihályi.

It’s officially called a ‘transfer accelerator’ by Dutch railway maintenance company ProRail, but everyone else would say it’s a slide.

Also, see Carston Holler’s slide at the Tate

Danish company Julien de Smedt (JDS) Architects came up with an original way to take advantage of a space that is usually neglected: the roof. They managed to create an incredible rolling rooftop playground and park in Copenhagen’s Nørrebro district….http://freshome.com/2011/06/30/unique-roof-playground-in-copenhagen-for-both-children-and-adults/