I defended a feeding player in my game against a toxic one...

And oh my god. We won the game, but it was a vayne player, having a bad game. Her support was pretty toxic to her, but honestly defending her felt like one of the best things I've done. The vayne player gifted me a skin afterwards, and to be honest with you, that's what should happen. Doing little things like this can massively increase how good a player can play, and it feels amazing if you win.