In absence of a formal registration system, a trust creates a concept of protection so that the beneficiary will receive the benefits of protection from the trust. In olden times, property might be held in trust for a period during which a local warrior would go to war and the trustee would be responsible for maintaining such property (e.g. paying tax, cultivating land, etc.). When the warrior returns back from war, the property is returned to him/her. A declaration out loud or in writing is likely sufficient to create a trust, be sure to check with your counsel.