You can use your last will and testament or revocable living trust to make gifts that benefit the organizations you support. Gifts can be distributed according to the instructions you have left in the trust. Such gifts are 100% deductible for federal estate tax purposes.
For many institutions, legacy gifts from estates make up large portions of their operating budgets. What better way to remind your family of causes worth aiding, regardless of the size/percentage of the gift? Help your family remember what is important to you.