If you want to buy something a little more different then the standard flowers and chocolate. I recommend the
LCN MAGNETIC NAIL POLISH STARTER SET
Shake the polish bottle well. Apply a thick layer of magnetic polish and hold one of the magnets (diagonal or star) over the wet surface of the polish for about 10 seconds to create the design as you watch! The magnet pushes away the polish below it to mirror the pattern!
This is still quite new and revolutionary and you will sure to impress your girl with your stylish skills.