I used a library card holder for this one:
I made several of these "Just A Note" cards, they always come in handy:
A super simple and easy one that can be used for almost any occasion:
Another tag/holder style one:
A cute Thank You card:
The next three pictures are all one card. I made it by decorating a folded up paper bag. the outside:
We slipped this cute envelope inside the opening of the paper bag. It held money, but could also hold a gift card:
So easy and so much better than store bought cards!