My ER kits always has an extra plug, extra tube, tire irons, master link, duct tape, zipties, and a CO2 inflator with extra cylinder and I always have an extra 10mm open end, 14mm open end, chain breaker tool, and 5mm allen wrench in my tool kit (along with the normal honda tools) I also normally have a about 10" adjustable wrench stuck somewhere (normality under the seat) Of course the BIG extras are a cell phone and 2-$100 bills "for ER only" Of course I always have a CC along-but that's just part of the trip.