By the time of the LoTR timeframe, when have the palantiri ever been used for good? Seems like malevolently misleading things happen even to the evil characters

By the time of the LoTR timeframe, when have the palantiri ever been used for good? Seems like malevolently misleading things happen even to the evil characters after they use it. https://en.wikipedia.org/wiki/Palant%C3%ADr#Characteristics https://en.wikipedia.org/wiki/Palant%C3%ADr#Characteristics