I use Cholla quite a lot for accent, like this ornament:
This is Carob and Cholla and Wenge. A cross section of Cholla in the body of the ornament, and several small pieces fit together and filled with Wenge dust to make the "ball" in the finial.
Yes, Leo, this is the infamous "jumping cactus" - aka Teddy Bear Cholla. It doesn't actually "jump" but the spines are so loosely attached that the slightest touch will dislodge them, and they attach themselves pretty firmly with slightly fish hook shaped spines. Another reason people think they "jump" is that they step on the little spines that are scattered all over the ground, then their shoe brushes their clothes or leg as they walk and the spines are transferred from shoe to you. Since you were nowhere near the actual cactus, the spines must have "jumped" off at you.
To take this cactus and "don't you have enough wood to turn" thing a little further - I also use the skeletons of Prickly Pear for inlay (not an original idea with me, I learned it from the IAP website where someone was imbedding the skeletons in acrylic and making pens):
This is a 2" pendant is made of Kingwood with an Inlay of Prickly Pear Skeleton filled with Turquoise and an accent ring of Silver cream laid in the groove.