There's a lot.
One rule that is dumb is that a brother must wear a suit for a Sunday public talk that he is giving. Any other time, the brother could wear a suit coat with a different pair of pants and not be counseled for it.
Another dumb idea is that you cannot date a person unless you seriously might marry them. If you're on a date, you were supposed to always have a chaperone and holding hands might not be allowed as well as sitting together.
What other dumb rules and ideas can you add?