Don't give just any card... give a unique, handmade in Montana card. 

"Love does not consist in gazing at each other, but in looking together in the same direction. --Antoine de Saint-Exupery"
-size: A7 (5 in. x 7 in.)
-blank on the inside, leaving plenty of room for your own words
-envelope included
-handmade using papercrafting techniques & materials