What are the basic things that one should carry everywhere with him or her?

What I carry in my bag.

1. Water bottle (600 ml)
2. Small cutting knife
3. Dry fruits in my small stack jar
4. Pen
5. Note book (Real notebook)
6. ID card and full address written on some paper along with important cell phone numbers.
7. General medication like painkillers (for sudden head ache etc)
8. Extra cash for emergency
9. Extra mobile /powerbank
10. Checkbook for some emergency payments in case wallet is stolen.
11. Insurance papers for my vehicle.
12. Paperclips /safety pin
13. Swiss Army knife key chain
14. Map of city (in case mobile network is not there)
15. Some more snacks. 🙂

via What are the basic things that one should carry everywhere with him or her?