Hallmark Gift Card Holder (New Baby Mobile) This adorable and clever gift card holder doubles as a cute mobile complete with animals and baby essentials that's sure to delight moms and dads to-be. This gift card holder measures 4.25 inches wide by 10 inches long when fully assembled. Includes one baby mobile gift card holder box that's perfect for a baby shower gift. Hallmark gift card holders are made with paper from well-managed forests. Hallmark was founded in 1910 when 18-year-old J.C. Hall arrived in Kansas City, Missouri, with a couple of shoeboxes of postcards under his arm and the American dream in his heart.