Postcard Swapping, Postcrossing, and Pen Paling is the new thing to do! Here are 12 Decemeber themed cards! Postcards are great as they are quick ways to write a note and you can pick out ones that capture the mood, your personality, the occasion or simply because you love them! “To send a letter is a good way to go somewhere, without moving anything but your heart.” Phyllis Grissim-Theroux Postcard Variety Bundle, Pen Pal Supply Pack, Pen Pal Stationary, Postcrossing Supplies, Surprise Me Postcards, Mystery Postcard Box