If you have children in elementary school, you need to check out Tiny Prints' Classroom Valentines.
If you are not familiar with Tiny Prints, these are the best cards you can buy. And you can completely customize with your child's pictures, your own text, and text and fonts that you choose.
If your kids are too young, too old, or non-existent, Tiny Prints also has great customized photo gifts and Valentine's Day party invitations, and their sister company, Treat has some aweome personalized greeeting cards.
Here are the most popular cards. If you order by January 30, 2013 and use the promo code 20JANSW you can save 20% on your entire order!