I ran into these Momiji dolls and now I'm all excited (no need for caffeine when you're a wedding blogger...). Aren't they the cutest?
And they are more than meets the eye. They would be such a romantic way to surprise her on Valentine's Day, plus she'd have a tiny keepsake of the big moment to take with her.
These pieces are limited-edition with only 2500 sets created world-wide, which means that your proposal will be truly unique (and if you want to buy one, you'll have to hop to it).