Before long after their introduction, other objects found their way into canes and have become common. In lieu of a blade, these could maintain telescopes, compasses, flasks called tippling sticks for Liquor and in some cases lock pick sets. There were even some with guns which proved impractical. Carbon Fiber: https://allhealthmarket.com/product/home-care-2/cane/ultra-light-cane-carbon-fiber-cane-outer-lock-trekking-poles-outdoor-telescopic-trekking-cane-mountain-climbing-walking-elderly-crutches/