Pump, tyre repair kit, multi-tool, spare inner tube, saddle bag, bottle cage(s), bottles, energy drink, energy food, cadence/speed monitor, cycle shorts, cycle jersey, short sleeved cycling top, long sleeved cycling top, cycling jacket, slightly lighter cycling jacket for when it's not that cold but you think it might be chilly, bento box, aero bars, quick inflater
......and of course anything made of carbon
Say goodbye to ever having any disposable cash ever again :)