The cane will typically extend from the floor to the height of your hip socket and maybe up to your belly button.
The cane might also be made out of plastic, aluminum, steel, or rattan.
The pace of the Taijiquan cane forms are seldom fast and vigorous. Good examples of a Taiji Cane Form are: the Standard Beijing 24 Form with Cane created by Master Wen-Ching Wu; the Eight Immortals Cane Form, Part I, created by Master Jesse Tsao; the Plum Blossom Taiji Cane Form; the Tai Chi Stick 18 Form; the Bodhi Dharma Walking Stick Form; Master Michael Gilman's Three Powers Cane Form; the Wu Tang Cane Form of Master T. Taijiquan saber or broadsword forms are readily adapted for use with a cane, and some are fast and vigorous.
Since 2005, I have also maintained the Cloud Hands Blog to point to changes and additions at the Cloud Hands Website.
Since the Cloud Hands Website is a very well-established and stable website, it provides readers with a good and secure starting point for their online research into Taijiquan and Qigong.
Many Qigong (Chi Kung) forms can also we done while holding a cane. Most often, however, Qigong forms are adapted or created for use with a short 6"-12" wooden stick called a Tai Chi Ruler or Bang.
I consider a cane or walking stick to be, normally, a straight strong wooden stick with a curved (hook) handle that is from 30" (76 cm) to 42" (107 cm) long.