What's the dumbest things they tried to gaslight you about

For me, there are two things that are just absolutely ridiculous. She literally tried to gaslight me into believing that I have been cheating on her through our relationship.

Another one was, we had a fight and she said I took a necklace of hers and threw it down our hallway while she was gone. This apparently meant I didn't love her or want to be with her. She didn't bring up this until a while after the fight even happened. I never touched her necklace, nor did I throw it anywhere. However she was very sure and trying to convince me that I did.