"There are a variety of printed card creation solutions, including Cards from Apple. One has let us know they have updated their card templates to include Valentines Day! No excuses to not have a card ready for the holiday."
"For postcards, Sincerely Ink is the power behind many iPad apps that offer to print and mail your photos. The app offers a very nice list of card layouts that you can add photos (filters, sizing and rotation is supported) and edit text."