Good is...? - Possible concepts - Flat pack

Playground objects able to be stacked, packed and unfolded.

http://design-milk.com/enzo-outdoor-furniture/

http://design-milk.com/modern-playhouses-by-play-modern/#more-85094

http://design-milk.com/modern-playhouses-by-play-modern/#more-85094

http://www.behance.net/gallery/Ikea-Flat-Pack-Direct-Mailer/1589985