Strips of Coavas Frosted Glass Window Film almost 7 feet long are available right now on Amazon for just $7. That's enough to transform a whole lot of windows, so definitely check it out.

Just cut the vinyl film to any size you want and stick it on ... You've got to check out the Coavas Self-Adhering Frosted Glass Window Film. $7 gets you a roll that's 17.7 inches wide by 78.7 ...