car air freshener
floor mat
Car Manual
Copy of OR/CR
Copy of Insurance
Emergency Numbers to call (Tow truck, Insurance etc.)
Road Map / GPRS
Notepad w/ Pen
Handy Flashlight
pepper spray or stun gun
First Aid Kit
Wet Tissue
Tissue
Rugs
multitool / swiss knife
charger
umbrella
EWD or Early warning device
Spare Tire
Jack
Tools
Tire gauge
Booster cable
Spare parts - Extra fuses, and bulbs
Trouble Lamp
Empty gas jug / container
how simple or extensive the things you need to bring depends on your lifestyle and where will you go, like for instance, I'd be good with the above things for city driving but I'll add a few more things for provincial driving like:
Extra oils / fluids
Emergency money
Extra food
Tire repair kit
Tow Rope
Mini Air compressor
Duct Tape