#15 if it is reflective (often gold on one side and silver on the other) it is likely a light reflector used when taking portraits. It reflects diffused light ("white" or with a golden tone) onto the subject.
"Found this in old dumped housewares. It’s a piece of solid glass, so it can’t hold anything inside. It’s about 15cm long and has a plated copper cap."
#15 if it is reflective (often gold on one side and silver on the other) it is likely a light reflector used when taking portraits. It reflects diffused light ("white" or with a golden tone) onto the subject.
I didn't know what these were, but I found a whole bunch of them in my parents' basement and I used them to hold up christmas lights lol