Sometimes, unenumerated rights are protected incident to a primary, enumerated right. For example, due to Article IV, a citizen of Vermont has a federal right to apply for the New Hampshire bar (to practice law in that state) on the same terms as residents of New Hampshire. Supreme Court of N.H. v. Piper, 470 U.S. 274 (1985). But I do not think the Ninth Amendment provides any independent protection of rights.