The Bill of Rights' ninth amendment deals with the rights of the people that are not specifically enumerated in the Constitution. Verbatim it reads: The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people.
To remember this we're going to memorize these words verbatim. [Yes, memorizing anything verbatim is tough.] The reason why [Besides my belief that this is the most practical way to remember this difficult amendment.] is this amendment's wording should be pondered. So for "nine" we're going to substitute the word "dine" and for those who know the link/peg/phonetic system we'll use the word "bee".
Memory story: You're entering your favorite, albeit very strange, restaurant where a "bee" maitre 'de escorts you to where you will "dine". Bee waiters then bring you all your favorite dishes. [Which you must very carefully visualize as they're brought to your table.] Starting with dessert he brings you "the new maraschino in the Constitution" cake (The enumeration in the constitution). A cake called a Constitution that has ten red, white, and blue maraschino cherries in every piece (which you count or enumerate very carefully) and a brown piece of sugared rice paper that looks like the Constitution over the top and edged with brown frosting. Then there's "Certs in rice" (certain rights) and "shelled nuts" (shall not). Followed by "bacon stew" or "bee can stew" (be construed), "as two deans eye" (as to deny) "your dish of porridge" (or disparage) made from "utters re-stained by people" (others retained by the people). [We want to remember this for a lifetime so take your time and do this one without any distractions. Then visualize it again tomorrow morning when your mind is freshest and before getting out of bed.]