Well I shadow boxed mine. See what you think of these!
Once the board and the doilies have set, flip it over and adhere the edges to the back of the board with the hot glue gun. Arrange the fabric flowers, button, smaller doilies and other vintage decorations into a design of your choice atop the doilies. Adhere with hot glue and let dry.
Check all those ideas here https://www.pinterest.com/search/pins/?q=how%20to%20display%20old%20doilies&rs=typed&term_meta=how%7Ctyped&term_meta=to%7Ctyped&term_meta=display%7Ctyped&term_meta=old%7Ctyped&term_meta=doilies%7Ctyped
This is sweet
So many other ideas
Frame them on dark colored poster board
I would put them in a curio
Frame them or put them in a shadow box
Put them in picture frames
Create Christmas tree ornaments.
Design a new lampshade.
I have put a very large on in a picture frame with velvet behind it. It was made by my great grandma and I wanted to keep it. Others I have dyed different colors, such as red and green for Christmas, Orange for Thanksgiving and pastels for Easter.