Ahoy, matey! I think I have found the PERFECT card style for swaps. This card -- the Short Graduated Accordion from the Fancy Folds and Motion Paper Crafts CD --is it! These are very easy to make, put together, and they fit into a regular-sized envelope. Plus you get two cards from every piece of paper!
My Short Graduated Accordion Card uses paper from Mark's Finest Papers and features pirate images from Alluring Impressions. A great kids card, to be sure.
If you need to still order the CD, you can order it directly from the link above, or from the Technique Junkie Newsletter home page.
Okay, off to go swap the decks. Have a great day!