If you have not ordered a free 2009 calendar yet, you may be interested in this free one from Oriental Trading Company. It comes with money-saving coupons so you will like it if you are a teacher! Anyone can sign up, but you must check "No" if you do not want to be on the mailing list. If you do get an email from them, you can still unsubscribe on the email.

Other free calendars were listed here and here.