Felt the sweaters. Throw them in a hot wash cycle in the washing machine, then dry on high in the dryer.

Cut the felted sweaters into squares about 1-2" wide.

Manipulate the dry cleaner hangers into round, wreath-like structures. String the sweater squares onto the wire by punching the wire through the center of each square.

Load up the wire with a dense array of sweaters.

When you feel that your wreath is sufficiently stuffed with sweaters, connect the wire ends. Embellish the wreath as desired. Hang and enjoy!