There is a pattern out in the LQS for a small tote and it has the interfacing with the pattern traced on it(the name of it escapes me) It can be made with 2 fat quarters and the pattern is about $8.00. You can also purchase additional interfacing for it. That would really be cute. I will try to find the pattern and let you know.
Or you could use place mats and just sew up the sides and add webbing for the straps.