I was faced the need to be able to place extra manageable content inside a wordpress page’s core content… and without an existing plugin available to do this I thought I’d write one of my own.
The output was the Widgets on Pages wordpress plugin which is at time of writing at version 0.0.4. The plugin basically allows the author to add a shortcode to their wordpress page or post which will then add the content of a predefined Widget area (or sidebar) at that point in the post/page
The plugin approach allows the user to add a lot of extra control to their wordpress sites without the need for any coding or markup skills (PHP, MySQL, HTML etc).
UPDATE: In version 0.0.4 you are able to define an unlimited number of separate sidebars and call these all separately within the wordpress content.