The witness was given 'blanket' protection from prosecution. [=the witness would not be prosecuted for anything]
The job was her 'security blanket'. [=the job was the thing that made her feel safe and secure]
A 'blanket' of gloom spread over the crowd when they realized their team would lose.
(..) Well, I bought you this. I can't accept this. This is too extravagant. Oh, no, it's nothing. There was a guy on the sidewalk, had a bunch of them laid out on a blanket. If you look closely, it says "Folex". - Still, I... Please, it would make me so happy if you'd took it. (..)2006 TvShow: Desperate Housewives Title: Listen to the Rain on the Roof Season: 3 Episode 1