Teddy bears from SOS Supply: http://www.teacherspayteachers.com/Product/Teacher-Valentine-Cards-Valentine-Bears
Groovy valentines from Elementary Lesson Plans: http://www.teacherspayteachers.com/Product/Teacher-Valentine-Cards-Valentine-Bears
Loveable penguins from Kidrcute:
Fishy cards (use them with goldfish crackers or Swedish fish) from HoJo:
Versatile valentines from 1st Grade Teacher: http://www.teacherspayteachers.com/Product/Valentines-Day-Cards-Toppers-and-Bookmarks-Kids-Theme
Sweet Valentines for a sweet day from Ruth S.: http://www.teacherspayteachers.com/Product/Valentines-Day-Fun-Cards
Animal photos on valentines from the National Wildlife Federation: http://www.nwf.org/kids/big-backyard/valentines-cards.aspx
Sweet owls from Ready, Set, Create! : http://ready-set-create.blogspot.com/2011/02/cuuute-heart-owl-valentines.html
A nostalgic set from The Handmade Home: http://www.thehandmadehome.net/2011/01/valentines-day-freebie-lurve/
...and if that's not enough, I have 2 sets of my own at my Teachers Notebook store. They are designed to honor the character traits we work so hard to instill in our students, like perseverance, honesty, friendliness, and kindness.
The first set is for the 1st through 5th grade crowd.
Then I got a special request for something more specfically for the K-2's.
Each set contains 22 different valentines and costs $1.50.
Hope this will make choosing your Valentines a simpler job this year, with no late-night run to the 24-Hour Walmart! :)