My kids always want to give Valentine cards with some sort of treat on them though, because those are also their favorite to receive. Over the years, we have started looking for ideas of fun, unique things to add to the cards that don't involve candy.
Last year my 5th grade daughter's whoopee cushion valentine's were a huge hit.
This year I looked through the Oriental Trading catalogue with my kids and let them pick something (with guidance of course).
My 3rd grader chose cute butterfly masks for the girls in her class and slap bracelets for the boys. My 1st grader chose mustaches for her his class.
We did a little photo shoot and then I added messages in photoshop.
We will print these pictures 4x6 and then attach the masks, mustaches and bracelets along with writing the names of the classmates on the back of the photo.
The mustache ones aren't as creative as you can find them all over on pinterest, but my son wore his mustache for the entire day after the photo shoot, so at least I think the kid's in his class will love to get their own to wear.
His front tooth fell out the day before - so we had to showcase it somehow.
My youngest son, really wanted in on the action so I let him have a mustache to wear. He kept calling it his "Mus-beard." He also found a hat in our dress up closet and started following me around asking me to take a picture of "cowboy Dantley." He was twitching his lip and acting tough. It was too cute so I decided to make a Valentine for him as well. He isn't in school yet, so maybe it will just be a fun one to send to his grandparents.