An abstract picture of yourself blowing bubbles and one of the bubbles floating the highest away in the sky is the ring.
A Family Tree Wallhanging and place the ring in an inconspicuous area as it was part of your life-like maybe underneath a loose leaf hanging on a branch. If you have children, certainly the ring means something to them and it is possible they won't have a problem with the ring on the Family Tree. To want to incorporate a symbol of your past marriage into your life, having the ring on a Family Tree Wallhanging in plain site may or may not be an issue with you. Doesn't sound like you are asking for a negative solution, just something creative.