Similar to the point above, this one is even more generic. What do you enjoy reading? What catches your eye? What will you talk to your friends about? Write about THAT!
News is always happening, from the latest Marvel movie to Russia’s latest antics. The brilliance of writing a post on current events is that people are already looking for more information and thoughts about these subjects. Your opinion post on current events could become the next viral sensation!
It’s even better if you can tie the current events with your product or service.