A buddy of mine designed and created a beautiful deck of cards, available on Kickstarter. They are made of durable, cleanable plastic. Easy to shuffle, store. Beautiful to look at, but don't take my word for it. Take a look f'y'self. https://www.kickstarter.com/projects/gracklegrafix/bird-photo-playing-cards-55-original-photos
@CrypticMirror They're plastic, so wipe-able/cleanable. Card stock would probably be more vulnerable to marking...
@FinnegansWhacked How easy are they to mark, though?