I like picture of trees against the light ...
Years ago, when I first got into serious photography, I had a period of doing lots of contre-jour photos, and, as I lived then in the Forest of Dean, that meant lots of photos of trees as well. Here's a few - but bear in mind these were taken in the 70s/80s and were scanned on one of my first scanners, so quality isn't that good.
I distinctly remember bunking off college one foggy afternoon as I knew there were pictures to be had and I was going to miss them. The third one above was one of the results.