Instead of using costly window film to obscure a window in your home, check out this sweet trick from Maitreya at Craftlog. You can starch your favorite fabric and adhere it to a window pane for a pretty light filtered effect.
Pictured above we see some starched linen windows that were done by Maitreya at Craftlog. By sponging a starch/water mixture on your windows, you can then apply your starch soaked fabric, let it dry, and trim it to size. She has some links in her post that serve as good reference if you are looking to tackle this project yourself. It is perfect if you have an window that lets in too much light or lets the neighbors have too good of a view.