有別於傳統的耶誕樹設計，來自美國芝加哥 Cloud Gate Design LLC 的設計師 Nick Ng 與 Dan Greene，他們特別關注對地球環境有善 ( eco-friendly )的方法，設計出以回收瓦楞紙板與包裝紙製成環保紙板耶誕樹，除此之外，他們還將賣出的環保瓦楞紙板耶誕樹利潤提撥一部份捐給植物節基金會( Arbor Day Foundation ) 的 Trees for American Project，捐贈的每一塊錢都將用於受損林區的樹木種植之用。
Cloud Gate Design 設計的環保瓦楞紙板製耶誕樹，長寬尺寸均為 3 英尺，價格為 22.95 美金，另外他們的網站上還提供許多別人的創意聖誕樹作品，或者你也能發揮自己的創意來DIY喔！
除了回收瓦楞紙製的耶誕樹外，平面設計工作室 Paprika 設計了一款由 300 個回收瓶裝水製的 Ice Tree，外型看起來冰冷的耶誕樹被吊掛在蒙特婁 Domison 傢俱店的展示櫥窗中，在燈光照射下 Ice Tree 十分閃爍的吸引眾人的目光，同時也喚起人們重視環保與回收的重要性。
出處:EARTH PROTECT 節能減碳，用行動愛地球bolg
The Cardboard Christmas Trees
This Holiday Season you can save a tree (and a box) with a fun, enviro-friendly Cardboard Christmas Tree! With Christmas quickly approaching, many of us would like to engage in the holiday cheer without the use-once-and-toss-in-the-street traditional Christmas tree, and this simple centerpiece may be just the alternative you were looking for.
The Cardboard Christmas Tree was designed and developed by Cloud Gate Design LLC, a Chicago based design house. Cloud Gate Design was founded in 2006 by two designer friends, Nick Ng and Dan Greene, as a way to bring environmentally conscious alternatives to market. One such item, the Cardboard Christmas Tree, extends the life of existing cardboard by using recycled corrugated cardboard for the tree and its packaging.
In addition to taking the pressure off existing tree farms, a portion of the profits from the Cardboard Christmas Tree sales are donated to the Arbor Day Foundation’s Trees for America Program. For every one dollar donated to the program, one tree will be planted in a damaged forest.
The meager price of the Cardboard Tree is $22.95. Assembled dimensions are 3 feet tall by 3 feet wide, and it may be adorned with your own creative decorations or the cardboard ornaments offered on the website.
Except the cardboard Christmas Trees, The Paprika also designs an Ice Tree which is made by 300 recycle plastic bottles. By its appearance, the Ice Tree looks ordinary. Surprising, the Ice Tree distributed the lights that is absorb the people when the Ice Tree hang on the Domison（the furniture shop in Momtreal）. In the meantime, two of this way could also waken the thoughts of people care about environment and recycle problems.
The resource from:http://inhabitat.com/2008/12/03/cardboard-christmas-tree-by-cloudgate-design/