Just a random thought. Some of you might have seen youtube videos showing a simple device to transform a plastic lemonade or coak bottle into an endless strip of plastic ribbon, which can then be heat-shrunk and tightened to make strong joints. One youtuber used the method to make simple furniture from willow sticks. Any way the thought suddenly occured, you could use that method to make wrappings on tools such as elbow adzes. Rawhide isnt always available, lemonade bottles usuallyn are.