Blanket

Jael went out to greet Sisera and said to him, “Come in, my lord. Come in with me. Do not be afraid.” So he entered her tent, and she covered him with a blanket.

…when I made the clouds its garment and thick darkness its blanket,

Your pomp has been brought down to Sheol, along with the music of your harps. Maggots are your bed and worms your blanket.

Indeed, the bed is too short to stretch out on, and the blanket too small to wrap around you.