For these reasons it's good idea to own a fireproof safe. What should you consider storing in it?

1. Property insurance policies and agent contact information.
2. You'll need this information right away if your house suffers damage in a fire.
3. Passports and original birth certificates.
4. These can be a hassle to replace and will come in handy to establish your identity for other purposes
5. A list of family doctors, prescription medications, and contact information for all pharmacies you use.
6. CDs or an external hard drive containing digital copies of all family photos.
7. Safe deposit box keys. If you store valuables at the bank, you'll want to make sure you can access them in the event of an emergency.
8. Important papers related to investments, retirement plans, bank accounts, and associated contact information. You may need ready access to funds.
9. Information on your outstanding debts, due dates, and contact information. It's important to keep tabs on your finances and protect your credit, in the event you're displaced by a fire.
10. Original Social Security cards. These can be difficult to replace and may be needed to establish eligibility for benefits.
11. Copies of your important legal documents, including powers of attorney, living wills, health care proxies-both for yourself and for anyone else for whom you are designated attorney-in-fact or health care surrogate. Having access to these can help ensure the protection they were created to provide. 
12. Copy of wills and all wills in which you are designated the executor. It's important to have access to these as safe deposit boxes are typically sealed upon notification of the box owners death.
13. Valuables: Jewelry, coins, cash, etc. that you may want access to from time to time.
14. Spare Keys and titles to all vehicles: It helps to know where copies are in the case that you need them.