Simple. Flexible. Versatile. This plugin will not get in your way. Place your content anywhere on your site.
JET4 Content Areas allows you to create content which you can drag into a widget area, show in your template files, or place into your other posts and/or pages. This plugin also has many hooks, including filters for almost everything as well as actions so you can modify its behavior to fit your needs painlessly.
JET4 Plugins (http://jet4plugins.com/content-areas)
Please comment here for issues/complaints/suggestions.