I spent a long time freewriting, trying out different pieces of writing to see what resonated with me the most. It was easy to get absorbed into writing one particular thing, and it's given me some strong appreciation for how useful freewriting actually is.
All six pieces that I did were plucked out of dreams (or daydreams) that I've had floating around in my head. At first, I found it difficult to know how to translate them into a freewriting piece, but something clicked when I just kept my brain focused on a single subject.
I think that freewriting has become a good way to develop into other writing styles. I have a very distinct way of writing that doesn't work for all kinds of content or fiction, so accidentally freewriting into unfamiliar niches has given me room to experiment.
It's surprising how much of a difference a single keyword can make. One of my test pieces used nothing more than the word "North", and the written piece that I created was surprisingly in-depth for such a simple starting point.