Icons are a vehicle for spiritual contemplation and there are so many beautiful ones out in the world. One particular type of icon is a glass icon. This tradition of painting icons on glass is predominantly Transylvanian. Here is an image from artist Klara Balazs who I found on sibiel.net. Check out the site as it is in several languages; English, Italian, French, Romanian.
You can also visit this link to an article, that while it is in romanian, it has some nice examples of icons on glass. If you didnt see enough, then you can also put in the search terms icoane sticla in google and check the images section to see a variety.