Drupal is one of my favorite CMS. For a recent project I need a plug-in that can duplicate a page or a branch of book nodes. Even more I want to set them as node templates, so that I can use them for further actions.
I've looked at so many modules of Drupal, but none of them meets my requirements. So...sadly I must do it myself. The result is, I wrote a module called "node template", which can be found at http://drupal.org/project/node_template.
It's my first module project for Drupal. So I hope I have more free time to make it better. Although setting up a CVS release of that module cost me already 30 minutes to figure it out, finally is it there. :)