Souvenir collecting is sometimes considered a form of obsessive-compulsive behavior, particularly when it becomes excessive and impacts daily life.
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The value of antique dolls can fluctuate wildly based on incredibly specific details, like the type of glass eyes or the placement of a single stitch.
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Some key collectors, known as key enthusiasts or keyophiles, categorize their keys not only by type of lock but also by the maker's mark or unique design features on the key's bitting (the part that interacts with the lock).
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