For Mother's Day this year, my own mom made a big new batch of her hit project bags.  

The highlight feature of this project bag is the metal frame encased near the zipper, which allows the bag to stay open like a giant yarn bowl as you work on your project.  It's reminiscent of a vintage doctor's bag in terms of the shape and construction.  There is one inner pocket measuring 8" x 4" and the overall dimensions of the bag are approximately 11" long, 8" deep, and 9" tall.

Some bags are offered on their own, while others come with coordinating yarn as a set. 

The sewing pattern for this bag style can be found here.