I know someone who got a digital photo of NYC's Times Square area, and where they usually have those theatre district billboards, he shopped in "Will You Marry Me, [her name]?" onto one of them, and had that made into a jigsaw puzzle, and gave it to her right before the winter holidays because they had a tradition of doing puzzles on Christmas Eve in her family. He had been invited to join them at her home for Christmas that year.
It turned out to be a massive home run of an idea, if not entirely original, who knows. Anyway, she finished enough of that jigsaw puzzle on Christmas morning to get the picture, right before he and some other members of her family came downstairs for breakfast. She promptly said yes!