When selling cards I find a pack of 400 nappy bags from the £ shop very handy. NOT that I sell 400 cards, but they come in lovely pastel colours such as aqua and lilac, and smell devine. They are strong enough to hold a few cards and are just the right size. Most people do not know they are nappy bags, I didn't know there was nappy bags until there was a baby in our family!!!
Poppy bunny6