The only paladin items I remember are from Baldur's Gate 2, and i think it is unlikely you will be able to use the holy avenger or the purifier. But aside from that you can use some wands, that warriors can't use, and cleric scrolls, too
@sandmanCCL no, they didn't have a lawful good requirement on them, I fought with carsomyr through all of BG2/TOb even when i turned neutral evil in hell
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But aside from that you can use some wands, that warriors can't use, and cleric scrolls, too
So, no.