Raised by Goblins (or other!)
You speak Goblin natively (much better than one who has learned it later in life).
You automatically notice and can avoid crudely-made traps and have advantage to notice and disarm more sophisticated traps.
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Change It Up! You can choose any other ancestry to be raised by instead, and exchange the known language and get 1 helpful/iconic ability those people would inculcate (e.g., Dwarves know Dwarvish and are very good with smithing or stonecraft).