The blanket is comfort's fabric — warmth pulled over, the security object, the cover both literal and metaphoric. Blanket-less cold is comfort stripped; the shared blanket, warmth negotiated; the quilt, comfort pieced from many patches.
Positive Resonance
Comfort at hand, warmth kept, security soft and portable
Shadow Aspect
Covers pulled over the head, comfort as hiding, the blanket hogged
Nuances
Wrapped warm: comfort complete
Blanket too small: comfort insufficient for the cold
Under the covers hiding: comfort as retreat
The quilt of patches: comfort assembled from history