I just came across some really cool [downloadable permaculture resources](http://www.permacultureprinciples.com/freedownloads.php) over at [Permaculture Principles](http://www.permacultureprinciples.com).
There’s a printable PDF book on the Essence Of Permaculture, a desktop background image on the 12 principles of permaculture, and two printable posters on the ethics and principles of permaculture, and the permaculture flower.
On that site are also a number of [permaculture publications](http://www.permacultureprinciples.com/resources.php) for sale – books, magnets, and a 2009 diary and calendar.
I just ordered the calendar to hang on my cubicle wall at work.
Have a good look around the Permaculture Principles site. They also have some great [permaculture videos](http://www.permacultureprinciples.com/videos.php), links to other [online permaculture resources](http://www.permacultureprinciples.com/onlinereferences.php), a collaborative [permaculture photo log](http://www.permacultureprinciples.com/photolog.php) (contribute some of your own photos!) and lots of articles.