I want my stitch and technique photos to be sharp and easy to read so that people can see exactly what's happening with the yarn and the hook.
Some years back, I had great success with some craft plastic tubing I got at Joann's. I used it for my half-double crochet stitch illustrations, and I still use those photos in my patterns. They're great. Unfortunately, the plastic tubing stank so much I had to store it in the garage. I've been looking for a less odorous alternative.
I found the answer on the cover of a recently published book, "Crochet Secrets from the Knotty Boss" (highly recommend!). On the cover and inside are stitch samples made with tubing yarn. Genius!
A lot of tubing yarn is super bulky weight for home dec items such as baskets. However, Bernat makes a lighter version, which arrived here yesterday. Bernat Maker. It's a bulky-weight (#5) cotton tube with nylon filling. It might even be good for hats with great stitch definition!