First thought went to roller bearings of some sort, but then your non-metallic answer threw me off.I'm afraid that all my "interesting" objects were used already.
Let's try this one:
View attachment 298909
First thought went to roller bearings of some sort, but then your non-metallic answer threw me off.
My brain is having a difficult time understanding what this shiny material is if not metal.
- K
the highly reflective part is plastic isn't it? Like a molded/plated item. like a toy instrument would have that look? Correct about the shiny?
Valves? Like pre-transistor?
Old flashbulbs? (I hope not )
is it electric or battery operated?
Light up your surroundings
Emissions are useful
Divide and conquer
View across the tips of an LED array?