Here's an idea:
There are lots of things you could do ... https://www.pinterest.com/pin/439382507396850992/
check that pin
You could glue them together and make a collage for the wall all diffrent kinds
You can repurpose them into serving or vignette trays.
Here are some ideas: https://www.onegoodthingbyjillee.com/13-uses-for-old-picture-frames/
Make a family tree - https://www.hometalk.com/24945001/family-tree