My son took his then soon to be kallah to a restaurant they liked, and hired a magician to do magic tricks at their table. He had him take a bunch of beads with letters on them and “magically” turn them into a bracelet for her that read (_______ will you marry me). She was really touched. That was 11 years ago. I like creative proposals.
My son-in-law took my daughter to a planetarium museum on Long Island, and they saw the lights show with the beautiful planets and stars, after which he led her to a previously-prepared by him collation for two with roses and wine, and proposed to her. That was almost 7 years ago.