Just a few examples from me.. I decided to take this in the way, that there is a light source in the photo. Not as in 'all photographs are made by light', like they are, but then, it could be absolutely any photo. Just my interpretation of the theme though.
This one is from 10 years ago just playing about with my first dslr (nikon d40) long exposure and zooming out at the same time. [url=https://flic.kr/p/6CKff8]Tree lights by Daz, on Flickr[/URL]