Promise Rings

Surprise her. Thats really sweet and girls love surprises. You can go to any jewelry store and tell them what you are looking for, they are more than happy to help. Alot of jewelry stores are carrying promise ring collections. Check out some chain stores like Kay`s or Zales, something like that. But make sure its what you want and in your price range, and make sure you don`t confuse your girlfriend when you give it to her, like don`t fake propose or anything like that. Good luck.