They do that by using the only material (Linus's security blanket). Cats may adopt a blanket and use it like a security blanket. Snoopy his security blanket, as a way to remember him. Now we're each other's security blanket, in a way. This security blanket covered the British, UK and Australian facilities and personnel. During the funeral service, Will kept Maria's security blanket around his shoulders. Monk confesses that the security blanket wasn't Trudy's, but was in fact, his mother's.