you could buy several canes, i say maybe own just about 3 (for change of styles and so that just 1 cane doesn't get boring!), and decorate them! A few design ideas:
you could hotglue fake neon chains onto one of them in a spiral form, going all the way down! (or paint it neon, then do the same but with black or silver fake chains! :D (i say fake bc theyre prob cheaper and wont weigh down your canes.
you could paint it black or get a black cane and decorate it with kewl stickers!!!
maybe hotglue fake spikes onto one??
you could also get fake fur of neon or black, and wrap your cane in that!