I have given mine away and noone has complained - yet!
I use leather thong (thicker than a shoelace), thick hemp and copper wire. I use a good long length of copper wire and wrap it around a pencil to coil the ends so that it looks like vining on a morning glory ... 'tis cute and gives a great look. I also use thick silver-looking wire and do the same thing - usually one of the wire colors matches what I have done.

I've used twine, but it's not durable for long term outdoor use. I've also used a sturdy wire-bent here and there to look more rustic.
gardenkiwi-I love the idea of using copper wire and coiling the ends a bit!

Thanks sowngrow!
I was so busy getting the bug that I have on the gourd that I didn't get a good photo of the coiled wire "tendrils" but here is the link anyhow! I have not taken photos of any of the others that I can think of. Next time I shall make sure I get decent pictures to share!
Rita in Michigan

Here is a link that might be useful: