Maybe if you give an example of what quest items you are talking about and for what quest.
If it is only one item and one quest you are talking about use wowhead to identify the specific questID and go from there for your specific one of a kind mini addon.
If you were wanting a more generic addon for future quest item scenarios then the only way is using events to identify the questID and then use the questID for the different questID used functions.
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