It's important to know both which documents should be secured as well as the best way to secure them.
Top 5 documents to keep locked up
1. Tax returns
4. Birth certificates
5. Social security cards
How to keep them safe: secure important documents in a safe deposit box like the ones offered at banks, keep items locked up in home safes, ensure documents are protected by using plastic covers when appropriate, and make sure you shred confidential information.