shazdeh

With this plugin you can display the content of a post (of any type) in a widget area. You can also limit number of words, change the delimiter and add a read more link to it.
This means, in a widgetized theme, you can move the content around and arrange it however you like, and even reuse it in multiple places. Also comes in handy if you want your client to be in charge of the content, without having access to the Widgets manager.
Since 0.3 you can also query for a random post, or the latest post and limit it by category and offset.

Content Widget

A widget that allows you to display the content of a post (of any type) in a widget area.

mindwiremedia

Creates anchor links to heading tags in the content and displays them automatically at the top of the content, or allows for custom placement with tags or sidebar widget.
Features: 
 1. Has option to auto display anchor links to Heading tags in content. 
 2. Allows control of which content to auto display links. 
 3. Can disable plugin css to allow custom styles to be applied. 
 4. Has widget available for display 
 5. Insert custom title to display above links 
 6. Clears all traces from any excerpts displayed

Auto Anchor List

Creates anchor links to heading tags in the content and displays automatically at the top of the content, or allows for custom placement with tags.

Content Widget vs Auto Anchor List