I LOVE postcards.
I once organized a postcard-themed-birthday-present for my grandfather. He loved it!
Decorate my walls with postcards.
I like surprises, I'm not very keen on multiview-cards but I'm gonna be very happy with every card that finds its way into my mailbox :) Also, I read a lot. I am a librarian. Anything book-related in your message or on the card will make me jump for joy even higher. And I really like cards from Marie Cardouat, who illustrated the board game "Dixit".
Hope hearing from you soon!