A crafty mom named Holly Ramer, who runs Stitch-Craft, took a picture of her son Parker's Star Wars LEGOs and then created these Valentine's Day cards out of them, popping in mini colored glowsticks where the light saber should be. She was inspired by this other Star Wars Valentine's Day card made by Megan, a fellow mom.
On her website, Holly even provides printable PDFs where you can download the four cards, each with a different background color (or one in all white). How fantastically fun!