Add any HTML to your site

Llevaba tiempo buscando un módulo comos éste, simplemente un módulo donde poder poner "lo que quiera". 

Esta es la descripción del módulo que da el autor:

 "With all my Joomla installations, I've usually been able to find a module to provide some sort of content for a sidebar. But sometimes, you just need a bit of static HTML that isn't automatically created anywhere on your site. So I whipped together this very simple Joomla extension that just provides a textarea for you to put in any HTML you want to. That HTML is then displayed wherever you place the module."

Más información y descarga del módulo