Only one I could find.... funny thing is its actually indigenous to the Arizona area
Not putting a negative spin on your mod.... it actually sounds awesome, but most catci are edible in some way and the prickly pear has antioxidants that are beneficaial to us carbon based life-forms.
Candelabras Cactus (Euphorbia lactea)
Description: A many-branched succulent spiny shrub or tree with milky sap. Although it is often times mistakenly referred to as a cactus, it is actually in the genus Eurphorbia. Branches are 3-4 inches, angled, with a white band down the middle of each side. Ridges are wing-like and spiny. There are tiny leaves between the spines. This is a cultivated plant.
Poisonous Parts: The milky sap. Avoid contact with skin or eyes.