I put up a long curtain rod in my room. Then I ended up using what are skirt grip hangers that were black plastic. I then looped black grossgtrain type tape throught the openings so the quilt would hang properly. I thought of those curtain rings but they are metal and I was thinking they could damage the quilt by making holes or whatever.
Look at your LQS's and see how they display their quilts and you will get more ideas.
ali