Nate Finch

Use this plugin to place a disclaimer widget into a custom widget area, which will display on all posts or in specific categories.
After activating the plugin, you will find a new widget area and a new widget available in the Appearance>>Widgets section of your WordPress admin. Both the new widget and widget area are called \”Post Intro Disclaimer Announcements\” (hereafter PIDA). Drag the new PIDA widget to the new PIDA widget area. Once it is in the widget area, you can add content to the text area and select the colors you want to use.
The PIDA widget comes with default highlight, text color and background color settings. If you change the colors, save, and want to revert to the defaults, just delete the current colors in the input fields, and upon saving, the widget will revert the colors to the defaults.
If you have any questions, suggestions or would like to report a bug, you can do so at the plugin\’s repo on GitHub by opening a new issue: https://github.com/n8finch/post-intro-disclaimer-announcement-widget/issues

Post Intro Disclaimer Announcements

Place a disclaimer widget into a custom widget area, which will display on all posts or in specific categories.

thunderdunk

Post Addenda is a lightweight, simple plugin that allows you to create reusable content to tack on to the end of posts. This is great for disclaimers, bios, ads or promos, or anything that you might want to include with your post.
Leverage the styling and formatting power of the content editor when you create your Addenda. We don’t add any additional styling, so it will automatically look like your theme content out of the box.
Create an Addendum
<ul>
<li>Once you activate Post Addenda, a new menu item will appear in your Admin area.</li>
<li>Go to Post Addenda > Add New and create your Addendum. Add any formatting, images, <code>hr</code> tags, or whatever you want.</li>
<li>The title of your Addendum can be displayed along with the content, or not.</li>
<li>Save your Addendum. Post Addenda are a custom post type, so you can manage them just like any other post.</li>
</ul>
Add an Addendum to a Post
<ul>
<li>While editing a post or page, locate the Post Addendum panel below your content editor.</li>
<li>Optionally select the Addendum you’d like to appear with this post. If you don’t select one, your post will be displayed as normal with no Addenda.</li>
<li>If you want the Addendum title to display along with the content, tick the box.</li>
<li>Save your post and watch your Addendum magically appear below it!</li>
</ul>
Note: If you don’t want an Addendum, don’t pick one!

Heptagon Post Addenda

Easily create and format disclaimers, bios, or any other type of content, and add below…

Post Intro Disclaimer Announcements vs Heptagon Post Addenda