Get the Prism!!
I am so thrilled with my experience with this- I got a fidget cube and one of the holder Prism keychains so I can put it on my carabiner. I got the Prismso I can keep track of it better, but it honestly has been making the fidget cube experience soo awesome because of the way I can hold the cord. Having a fidget cube has been helping me at concerts and while I'm starting my student teaching!