After having printed some giant spinners that I couldn't spin in my hand, I wanted a way to do so. I knew that a single ring would not be stable enough to prevent the ring from twisting around your fingers from the weight. I just watched Doctor Strange the other day and I remembered his Sling Ring. This is inspired by that design.

With this ring you can mount your 608 bearing based spinners on the end snuggly. I'm going to have at least two so I can pretend the spinners are the shield spell that Doctor Strange casts in battle. :)

The large spinner that I use as an example is https://www.thingiverse.com/thing:2342143 The Lotus Spinner by seviews. It's an Awesomely impressive spinner. :)