Via Flickr:
Our cardboard tree for christmas / winter festival 2012. Cut in one night, assembled on another.
Cardboard boxes salvaged from the hospital’s IT dept, who were obviously upgrading the entire department, judging by the boxes they were throwing out.
Festive coloured binder clips from Staples. Holds 2 pieces of cardboard together to make up for the fold in each piece.
2 circular cardboard struts provide further stability.
Snowflake lights from IKEA (2011).
Yet to be done: cover the free advertising for HP using paper snowflakes, and attempt to hang ornaments from binder clips.
akatsuki ra-ra-ra 
festive! happy holidays!
Happy Holidays to you too!