What is the common thread between neckties, knife sheaths and dog legs made of birch bark? They can all be made using the same weaving method. They are elongated baskets with size and shape determined by the width and number of strips and the length of the final object. Dog Legs? Russian birch weavers traditionally made detailed animals and human figures from birch bark. The appendages, arms and legs of these motifs are really no more than small "neckties" and knife sheaths. No, a full sized birch bark animal will not be a result of this class, but you can make your own personal tie to be admired by all!