Sharing this wonderful sustainable Christmas tree: 

At The University Library inOlsztyn(Poland), just like last year, everyone can see an unusual Christmas tree, this time made of more than 400 catalog boxes.

Following the success of last year's Christmas Tree (made from books), also this year employees of the Special Collections Department decided to create something original. 3-meter high, sparkling, and monumental. This is our Christmas Tree 2012!

As far as we know, the first tree of this kind in the world!

Unusual tree can be seen at the hall of the Library every day from 8 a.m. to 8 p.m.

A full article with a "making of" tutorial (in Polish) and additional photos are available on Pulowerek.pl: 
http://pulowerek.pl/2012/12/choinka-z-szuflad-katalogowych-w-bibliotece-uniwersyteckiej-w-olsztynie/

An article about last year tree made from books (in Polish): 
http://pulowerek.pl/2011/12/o-tym-jak-zrobilismy-pierwsza-polska-choinke-z-ksiazek/

Best regards,

ZuzaWiorogórska

Senior Librarian

UniversityofWarsawLibrary