What should a 13 year old girl carry in her handbag?

• The things she needs for her schoolwork.
• If she has one, a phone for safekeeping.
• Her purse containing her money.
• Possibly a pen and paper for taking notes, like phone numbers on adverts.
• Feminine toiletries such as sanitary towels/tampons if her period has begun.

There's not many things a 13 year old actually needs to carry with them all the time.