Creating a pop-up card featuring a rocking horse for a boys birthday is a wonderful way to celebrate the occasion. Your rocking horse (boy) pop-up card is now ready to bring joy to the birthday boy. Its a thoughtful and creative way to celebrate his special day. The 3D card is the perfect greeting card for new parents. The Rocking Horse pop-up card has a blue cover with a beautiful illustration of a rocking horse. When you open the card, you will find a tiny rocking horse in the center. Also, you can write your words inside the card.