http://www.windowbutterflies.com/index.html We are doing window clings today and thought we would pass on this site. She has so many cute free patterns.
Those are really neat, I keep thinking I'll teach my kids how to do stained glass but this may be easier and cheaper.
We like to make window clings, large and small. Especially for the holidays. We use Gallery Glass for our clings. Sometimes I will see a picture I like in a magazine and use it as a pattern. When we first moved into our house, I made birds, birdhouses, nests, and put them on the shower doors. Then I made a tree on both doors so when the doors were closed it looked like a whole scene or a stained glass. Perhaps I will try the paints that are on the link you provided. Thanks for the link!