Following package instructions, make a pom-pom. Set pom-pom aside.
Cast on 60 stitches.
Work in Garter stitch (knit every row) until nearly all yarn has been used. Bind off, leaving a long yarn tail.
Thread yarn tail into blunt needle, then weave in and out of bound-off edge of Hat. Pull yarn tail to gather this edge for top of Hat, knot securely.
With same tail, seam ends of rows to form tube.
Tie pom-pom to top of Hat. Weave in ends.