Does Hallmark make a card for this?

Today was Grandparents Day at Micah's preschool.  I do not understand why this is NOT a national holiday.  It is a day where I was encouraged to invade his classroom and playground, even take a million pictures of him washing his hands and eating lunch.  I was even given a gift.  A heart shaped card with his photo in the middle that said.  Happy Grandparents Day love Micah.  Who needs a Hallmark card anyway!