What do I do with xray plates?
Not sure what you have or what your project is...maybe this will help you. Another idea, based on what you have is to ask a hospital radiology department what some uses are for your plates, maybe they can guide you.
Best to you.
If you care to decorate for Halloween cutting bat shapes out of the black areas is when idea. Suspend with fishing line.
How many do you have?
You can always frame them for some cool Halloween décor!