There was one night he had waken up and I brought him into bed with us. We have a large "B" (quilt with ties), but this evening we weren't sleeping with it because it was too hot. However, when Michael got into bed with us he wouldn't quit crying. We couldn't figure it out, until he said, "A B!" We pulled our big, warm, B onto the bed, then he was instantly quiet and fell asleep. We were uncomfortably hot, but satisfied with the peace.
When Michael gets his B, he'll stick one thumb in his mouth and his other tiny fingers will creep around the blanket until he finds a yarn tie and he'll just twirl it around in a soothing, comforting fashion until he falls fast asleep. As long as he has a B, he's happy and content at night. It is an absolutely adorable attachment.