In addition to the standard toolkit, I carry a Leatherman -multitool, electrician's tape, some extra fuses, small LED -flashlight, a small motorcycler's first aid kit, my jacket's waterproof membrane and exhaust baffle. In my jacket pocket I always carry a hard plastic disc to put under the sidestand when parking on gravel, sand, grass etc.
Thinking about getting a bulb kit to be able to change blown bulbs on the road.