Receipts
Aside from avoiding the clutter that receipts does to your wallet, they contain your personal information that identity thieves run after. So after every transaction, reconcile them with your bank account immediately. Maybe your receipts should not stay longer than a week inside your wallet.
Social Security Card, Passport, Passwords and PINs
Can you imagine what can happen if your social security card, passport, passwords and PINs fall in the wrong hands? It can be used to buy a new car or to opening a credit card. These things are considered gold mines for identity thieves.
Anything that has expired
This means anything. Old credit cards, registration forms, passport – anything that contains your personal information. You have to keep them away from potential theft.