breaking axles, bending rims, and bending handle bars were my thing. i bent a old old set of profiles i had. landed(crashed) hard and the arm got tweaked a bit. broke a few headsets, bent a pair of forks, broke my old STA drop out( sweet warranty!) and my old mongoose expert pro i had, that was my first race bike, over time the headtube ovaled out and a small crack formed on the downtube… nothing too crazy though.
i have had quite the list of frames, wheels and other various parts though