I take part in a christmas card exchange each year, and am trying to come up with new ideas for something extra I could put in with the card. It has to be something thin enough and flexible so that it won't get broken, and light so I don't have to add extra postage. I've done recipes a couple times, and stickers, and glittery snowflakes. Edit: Cheap is another requirement. I'm looking at 50-80 cards here. Postage alone, especially international, eats up most of the money I can spend on this.