There is so much content available, you don’t have to always post original content.  Many bloggers will be happy to “guest blog” on your behalf.  Ask a colleague to pen a quick article on something happening in your industry.  Also, feel free to use another person’s blog or article, just be sure to recognize them and be extra courteous by adding a backlink to their article or site.  You will be (pleasantly) surprised at how many people will reciprocate.