I love conversation hearts. Did you know about 40 billion of those little suckers will be made this year? Here's a fun project that requires just a fraction of that number.
Valentine's Day Candy Wreath from A Bird and a Bean
Sounds pretty easy to make. You need three or four bags of conversation hearts, a Styrofoamwreath form, a hot glue gun (and glue sticks) and some ribbon. Just cover the wreath form with ribbon and then start gluing on the hearts. The blogger's tutorial is great and she has a couple of fun ideas for what you can do with the extra hearts.
Oh, who am I kidding? Any extra hearts are so getting eaten.