I made some DIY fabric trays with fabric and interfacing, and I love the result. They hold a lot of little stuff, and I got to choose some really fun fabrics.
Cut out two matching rectangles as small as 6 inch by 6 inch to as large as 18 inch by 12 inch. You can use a rectangle or square shape. Cut two of the same pieces from interfacing.
Sew around the edges with a 3/8-inch seam allowance, pivoting at the corners. Leave a 4-inch hole open for backstitching when you start and when you stop.