PMBOK: Lots of Great Ideas -- Don't Reinvent the Wheel

Regardless of your thoughts about Agile and Waterfall and the amount of process overhead that is appropriate for a project, the PMBOK Guide is an invaluable resource for project management practices that can be adapted to your project. Note that many practices and artifacts fall outside of the areas covered by Agile development processes. For example, project initiation tasks include creation of a project charter and methods for gathering requirements are all covered in the PMBOK Guide.

Besides the Project Management Institute, which is the keeper of all things PMBOK, there are many great examples on the web including one from the state of Oregon at:

With a concise Word document summary of the various templates with links at: