Keeping up with window frosting – Emma Jeffs makes very nice window frosting films, including the Pixel design pictured here. From the site: the film is not affected by condensation (good for kitchens and bathrooms), you can clean it using a damp cloth, it will last for at least three years, and it’s removable, although not reusable. It is positionable while applying, so you’re unlikely to have to leave it crooked. The film comes in a few colors and patterns including Otto, Pixel, and Lace. via Design Sponge.
I’m really glad to find this stuff — I have in the past used squares of contact paper to frost a window, but the last time I used it they left adhesive all over the windows. It was a difficult clean up.