Last year i made 25 little stockings out of felt ( just cut out a basic stocking shape and stitched two halves together with blanket stitch ); stitched a number onto the front of each and sewed them onto a ribbon to make an advent calender.The kids loved coming down each to see what little gift they had.
They don't need to be stiffened and you can make little ones to hang on your tree or bigger ones to use as gift bags.