by sidngr on WordPress.org
Create your HTML code and place it anywhere on your site using a shortcode.
HTML block listing
HTML block adds custom html blocks to WordPress. You can then add these blocks anywhere on your WordPress site using the shortcode provided.
Add [subpages_expand] to any parent page. All child pages' titles are shown as links that expand to content when clicked
Display video posts to clients on the administration screen. Give your clients a little extra help in the form of a how to video.
Block/blacklist known (and custom) spam referring domains at the WordPress level with an HTTP 403 Forbidden page.