I was cleaning out my laptop (technically my companies' laptop that I use), when I came across some personal files that I created in 1996-1997 and had gotten passed from machine to machine over the years.
These were HTML files from a so called "vanity" website I built between jobs back then. It surprised me how much some of the "articles" I wrote looked like a blog post. If only I could've turned that phenomenon into a business idea. Ah - missed opportunities.