My bikes get a custom covering of retro-reflective films, rack, lights, lights, lights, and more lights, waterbottle cages, fenders, pump, a bike fitting, Shimano A-530 pedals (with extenders), and typically 36 spoke hand built wheels. Anybody who would steal it, would find that they would have a hard time keeping it out of sight at night, as the films don't really show off in daylight (and would probably be overlooked).