If you really want to do it yourself cheap, get a roll of paper that they use on doctor's office examining tables. I bought a roll or two from a shop that sells medical equipment, like wristbands, canes, pillows. Make folds in it like a fan and use gabriel's suggestion of double sided tape. It's not totally see through but lets in a bit of light and is very inexpensive. I made horitzonal shades for my living rooms windows and snowflakes attached at the bottom. You wouldn't believe how many compliments I got on them. They worked for 8 years.