My partner and I own a stained glass studio, (centurystudios.com) and over the years have done quite a few Oz related projects. We made panels that were sold by Books of Wonder for a number of years, but have also done independent projects for clients, or just for the fun of it. I'm showing two window projects we did in the past, the first being the portrait of Ozma from the endpapers of Emerald City of Oz, and the other a group image using elements from an Emerald City color plate and additional characters. These are always fun pieces to create.
Currently I'm working up the pattern for a window based on the Lufkin mural design, painted by John R. Neill - the image shown below is taken from Oz-Story #6, published by Hungry Tiger Press. This will be a larger window and should be a lot of fun when it's done - but that won't be for quite a while. As it's a personal project, it will have to be worked in around other things.