A list of things everyone should have in their glove compartment includes a flashlight, a tire pressure gauge, and a multitool
Well, a mechanic has weighed in with suggestions of what useful items you should keep in yours. Here they are:
1. Flashlight
2. Your vehicle's manual
3. Proof of insurance and registration
4. Tire pressure gauge
5. Mini first aid kit
6. Pen and paper  (How old-fashioned!)
7. A multi-tool: It's more than a Swiss Army knife. It includes pliers, a screwdriver, and a small knife.
8. Spare fuses: It's good to have back-ups in case one blows while on the road. You can reference your vehicle's manual if you don't know how to replace it.
More info here!