As the head of a household, you are responsible for ensuring that you secure the future of the people who depend on you. You can do this through saving them something to use in future through trusts. In fact, you would be sure that you would have done the best thing that you would not regret and would work well. But, this would only be when it has legal backing.
Hence, you need to have the right legal support when you are making this step and you have to make your family aware of what you have done. There would be certificate that would be issued to support the deposit and this would need to be duly certified by a lawyer.
You may need to state how you would want your estate and other belongings to be distributed when you will be no more. This is where a Will would be very useful. But, this is a legal document that would not be valid if not written under the witness of a lawyer. So, you have to take note as well.
Wills and trusts are documents that are authenticated by the law. Unless you involve a lawyer or attorney to certify the documents, they would only be as good as missing. If this is not what you desire, then you better act wisely.