JDaniel would love Star Wars cards, but I got jungle animal  cards last year after Valentine's Day for 75% off.

We will be making ours this year - to hand out to grandparents, and a few friends.  I just need to build up the patience to help both of them at the same time to cut hearts and get stickers...

We bought a Disney pack on super clearance last year and will send in the mail to our friends (We do a snail mail exchange with our 7 besties at Christmas, Valentines, and any other time the kids are needing to get real mail)  We found a ton of sharks teeth this last month in the creeks and will make our own "I think your are pretty sharp" shark valetines.  I made a set of valentines or lunch box notes that are free to download if anyone is interested. http://teachersnotebook.com/product/Our%20Spin%20On%20It/lunch-box-notes-or-valentine-day-cards