I got this idea from a Design Mom post last year and we had tonnes of great feedback from the kids and families who received them. They are simple, and inexpensive costing only $3.50 for 20 valentines (10 cents per print plus $1.50 for 20 suckers at the dollar store).
Take a photo of your child holding out their hand like they are holding something (obviously).
I made the title in Photoshop which I tried to set up as a download for you but for some reason WordPress wouldn’t allow me to upload a .psd file. Anyway, you can easily make your own or even just write on the front of the photo with permanent marker. The kids helped cut holes in the card for the suckers and wrote their names on the back but since their faces are already on the valentine, they don’t even need to do that if you are to strapped for time.
Enjoy and Happy Valentine’s Day!