Lynn Gordon is famous for her idea-filled "books" in the shape of decks of cards. This one is just perfect for Valentine's Day: 52 Romantic Adventures, by Lynn Gordon and Deb Levine.
The types of activities in this deck range from the homebound to the extravagant, but they all hold the possibility of romantic fun for you and your spouse. Some examples:
And many, many more.
Also, don't forget to check our discussion "Romance and Fun on a Tight Budget" for a really great idea from one of our readers.