Here is a roundup of cure calendar ideas for you to stay organized and on top of things in 2012:)
YOUNG HOUSE LOVE (customizable with your photos if you use Photoshop)
SMILEBOX has loads of designs you can customize with your own photos.
Skip To My Lou
Year at a glance calendar, laminate and write on it with whiteboard marker, from clementine creative.
Living Locurto has two calendars for you. A table top one from the pic below, and a vintage floral one to frame.
She also has a Kokeshi Doll themed mini calendar, if you need something for your wallet.
Dollar Store Crafts provides a tutorial and a printable for a Tea Towel printable, just like the ones our grandmas had hanging in their kitchens.
A pretty one by Chibi Run, A Vintage fashion one by Dingbat Press, a vintage Paris calendar by Call me Victorian, if you are into herbs go to a number of things.
My absolute favorites are still the owls from My Owl Barn.
UPDATE: If you need a cute desktop background, please check out vattacukorhajú lány and her beautiful Manka dolls. She will be posting one background with calendar for every month in 2012.