Canes are now made from various materials, from metal alloys to carbon composites, from plastic to fiberglass. Most are hollow, some are solid. Canes fold, telescope, or are rigid. They come with reflecting paints or special tape that reflects light. Cane tips come in a growing array of designs from the traditional two inch plastic slip-on tip, to kids mushroom tips.
Some tips roll, others are smooth fixed disks.
Some grips have a groove for the index finger, many do not. There are canes with elastic bands to slip over wrists. Other grips have attached chain rings that can slip over wrists or serve as a loop for hanging up the cane when not in use. I am afraid that I strongly disagree with this. I teach all my clients, both young and old, that the elastic is solely to hold the cane together when folded, nothing more.