heavy, thick
thin
warm
soft
wool, woollen/woolen
electric
security (figurative)
He takes his security blanket with him everywhere.
For her, money was like a security blanket.

cover sb with, drape over sb/sth, tuck around sb, wrap sb in
draw up, pull up
She pulled the blanket up and went to sleep.

kick off, push off, throw off
clutch, grab
spread out

beneath a/the blanket, under a/the blanket
They shivered under their thin blankets.

a wet blanket (figurative)
I hate to be a wet blanket, but I thought the show was terrible.

Blanket is used with these nouns:
amnesty, ban, condemnation, exemption, indictment, prohibition, term