This is a simple and clean plugin for generating new posts, categories and tags for your site.
Adding posts and terms for custom post types and custom taxonomies is possible too.
In the plugin there is an Admin Panel that will allow you to configure how many posts and with witch categories and tags to use.
You can choose to insert featured images for the posts. If you select to generate 10 posts, the first 10 images from the Media Library will be used as featured images.
Generating terms is very easy: just insert the number of new terms and select the taxonomy you want.