Plastic hanger ... on hand
Shower curtain rings ... on hand
Duct tape ... on hand
Everything can be got at a dollar store or Wal-Mart. It would have cost about $3.
I followed the directions I found here at Inexpensive Scarves Holder. It was really easy, fast and came out adorable thanks to the pink Hello Kitty tape I used.
Here's the end result without scarves.
Good luck on your own endeavors!