To celebrate the 2012 Christmas holiday season, the official Nickelodeon websites of Nickelodeon channels around the world have put up some exclusive thoroughly festive Christmas-themed Nickelodeon goodies to download, which you can download by clicking on the links below:
The official Nickelodeon North America (Nickelodeon USA) website, Nick.com, have a selection of exclusive printables featuring characters from popular Nickelodeon shows to celebrate the Nickelodeon holiday season. Printables include Nickelodeon Christmas cards and Nickelodeon Christmas present gift tags featuring the casts of "Big Time Rush", "Victorious", and "iCarly", and a Nickelodeon orange snowflake (Clicking on the links will take you to .SWF Adobe Flash file format files hosted on the official Nick USA website which aren't geo-locked, so the Nickelodeon printables should be available to everyone).
The official Nickelodeon Japan website, NickJapan.com, has a selection of Christmas Nickelodeon computer desktop wallpapers in 800x600 1024x768 1280x1024 screen resolution sizes featuring festive scenes featuring characters from the popular Nickelodeon animated shows "SpongeBob SquarePants" and "The Penguins of Madagascar", including one of a Snowman SpongeBob SquarePants (SpongeBob SnowPants), plus Winter-themed snow scene "Dora The Explorer" Nick Jr. computer desktop wallpapers. The official Nickelodeon Japan website also has Christmas downloads featuring "SpongeBob Squarepants", "RugRats", and "Dora the Explorer" colouring in/painting activities, and "To Santa..." letter templates featuring "SpongeBob SquarePants" and "Dora the Explorer" in their Christmas Nickelodeon printables/crafts area.
Notes - A few of the above Nickelodeon Christmas downloads are in PDF format (Portable Document Format), and will require a PDF reader such as Adobe Reader X to be opened, viewed, and printed.
I will add more Nickelodeon-themed Christmas downloads if I spot any, so check back often!