Go to your local fabric store and see if they have a "fat quarter" of muslin or similar, undyed fabric. Fold over and stitch down hems on opposite ends, leaving room for a drawstring to pass thru. Fold so that the two hems are together and stitch up the sides from bottom to hem seams, leaving about 3/8" seam allowance. Turn bag right-side-out and install cotton twine or a white shoelace as a drawstring. Voilà, one spice bag!