9. Hazard triangle/flares
If you have any sort of problems on the road at night, you want to be as visible as possible, period. Like the first aid kit, this is mandatory in many countries.
10. Safety vest
Many roads aren't lit that well, and some aren't lit at all. If you need to pull over in the middle of the night, you'll absolutely need to stand out to other tired, late-night motorists.