These are just that size that works for lunch boxes or purse's or tucking into a coat pocket, you have enough room to write a quick note on the inside but, its not a labor intensive scale. either decorating the front or writing a novel on the inside. I think that makes the 3" size just fun to play with that way.
There are still a few more days left to play along with the color challenge this month and have a chance to win a shopping gift card to the store. you can find the details for that here.