Here's an interesting idea.
Josh Hanagarne of The World's Strongest Librarian wrote about his experience as a guest blogger. Feeling that he had fallen into a writing slump, he challenged himself to find 60 blogs where he could be a guest. The blog host chose the topic.
The response was overwhelming, and crazy making. Read this post to see how he dealt with the onslaught of requests and how the experiment helped his writing.
Could you write 80 different blog posts?