Is it a can-opener?
No. Not food-related.
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Another hint?
It’s more connected to my hobby.
Pencil sharpener?
Yes! I was cleaning the pencil sharpener and this is its entrails!
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I’ve never seen one of those on the inside. I’ll try to find something soon.
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A lamp … 
No
Not a slightest idea tbh.
Waterpipe?
No
Part of a fancy glass??
A bulb?
No and no.
Clue: It’s metal and you probably have one somewhere.
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Candleholder
No
5 left.
Water tap