I tried out some naalbinding which is a very old way to make something similar to knitted or crocheted cloth. The first time I saw something made this way was in Lofoten Islands in Norway at the Viking Museum. I promised myself then to someday learn how to do it. I´m so happy that one of our teachers at school knew how to naalbind and I was fortunate when she suggested that I´d try it out.
And continue until you have the desired length. It´s very stretchy so, next time you plan on crocheting a hat, try this out. If someone did not catch the technique - give me a hint in the commentbox and I´ll try to sort it out.