What are these metal things used for?

I found these at my local Habitat ReStore and thought of several things I can make with them. (Chandelier, wall art, coffee table or end tables) The workers there had no idea what they were originally. They were donated from an estate sale and found in a barn. Any idea what they were originally used for? Does anyone have any other ideas to upcycle them?
q what are these metal things used for, crafts, lighting, painted furniture, repurposing upcycling
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