I'm a couple days late to the game with this, but you still have 361 days to use my latest Paper Foldable, the 2010 Accordion Calendar! I was contacted by a calendar company several months ago to submit ideas for a papercraft calendar they wanted to produce, so I submitted this accordion idea. I never heard back from them, but I liked my idea and went ahead and made it!
Make the 2010 Accordion Calendar here: www.paperfoldables.com/accordioncalendar2010.pdf
Happy New Year!