Something like this.
Maybe try a piece of black felt. Use some cardboard bent like the stand on table-top picture frames. Glue them together and see if that does it. Or get an inexpensive table-top frame and glue felt to the front. Good luck.
I place pegboard in a pretty frame and then use pegboard hooks in singles and multiples. It creates a beautiful jewelry display for function and beauty! You can see mine in my closet here: https://lorabloomquist.com/closet-debut-and-junky-organization/
Foam board cut to shape and propped up on a stand. Insert cup hooks.
If foam board isn't sturdy enough, cut plywood and paint or cover with fabric.
I made tweo. One black and one white. Take photos of necklaces I sell on Ebay.
You could cover a gallon jug with fabric and hang necklaces over the neck. I just spray painted a branch with smaller branches, attached it to the wall, and hung necklaces from the branches. Natural, displays the necklaces nicely, and decorates the wall!