It might be hard to surprise her with this one considering most customization techniques require photos from multiple angles, but there's certainly no lack of places to get your hands on one. Besides, nothing says "I took pictures of your head while you were sleeping" quite like a bobble head. Whoops, we meant to say nothing says "love."
We'll go ahead and fill in her adoring response for her: "Oh ...thanks. I can wear this shirt once a year now despite never wanting to and think of you." How romantic.
If these hand-holding mittens are looking for another slogan, "Because a glove two people can hold hands inside is only like handcuffs, it's not handcuffs" has a cute ring to it.
They're all good, and come highly recommended for unselfish reasons. Could you be any more of a sweetheart?
Gift cards might seem pretty uninspired at first glance, but if "you're the one" is the message you're looking to send, expressing that you have no clue what she's into (but will gladly drop her off at the mall for a few hours) should do the trick. Plus, now she'll know exactly how much you spent on her. Hence, how much you love her.
They're themed. That's always romantic, right? Plus, it throws the subtlety of wanting to French right out the window. Who wants subtlety on Valentine's Day?
Here's a romantic ball. I thought you could hold it for awhile before it falls behind a desk and you don't bother digging it back out.
After suggestions like those, maybe just save yourself some time and cut to the chase.