While looking for simple purses to make for the Farmer's Market, I came across this bag. It's called the Masa Bag. The pattern is written for a full-size bag for an adult. My version, for a child or teen, is smaller and takes about 1 skein of Sugar 'n Cream.
The bag is a simple crocheted rectangle and the fun comes when you fold it into the bag. This second bag was made of 4 colors to give an idea of how it's folded.