www.grahambrown.com sells a film in a 27″ by 5′ roll that static clings to your window pane. I currently am using vinyl that I bought for $2.00 at a sewing store. I applied it with sprayed on windex (water would probably work too). Saw this on an HGTV show. Now I can take a shower in my bathroom and not worry that I’m flashing the neighbors.
I’ve had the vinyl up since August and in the past 3 months, some of it is starting to peel back so I’m either going to have to reapply it or look for a spray on product I read about somewhere and apply that. For frugality sake, I believe I will remove and reapply.