Draft Posts allows users to save a post as a draft which can be reused later as a template or draft for a new post.
Each Post can be saved as a Draft copy by one click at the foot of each postbit or checking an option when creating a new post.
All available Drafts are displayed below the bottom Reply button on the Show Thread pages.
All Drafts can be deleted from the User Control Panel area.
Note: This was created on vB v4.2.0 but I imagine it will work on any 4.x series.