Light rays are one of those things that appear rarely in nature but frequently in art. But I guess in a sense that's what art is - a selective view of nature. And the rays do add some nice depth to a lot of scenes.

This image was made almost entirely in Paint Shop Pro, but I thought a subtle fractal background made the water more interesting.

“It glittered like polished gold overlaid with silver light, and a white stone in it twinkled as if the Even-star had come down to rest upon her hand.”
- The Lord of the Rings, Book II, Chapter 7

This is my stylized version of Nenya, the ring of water, one of the three Elvin-rings. The background is an Apophysis fractal, the rest was drawn in Paint Shop Pro.