I have seen a lot of hand spinners around the internet for some time, and it really peaked my interest! But most of them are using skateboard ball bearings, which are fairly big and clunky in my opinion, and won't necessarily be small enough to comfortable and discrete in your pocket. This one is small, slim, but still big enough to get to.
So this is just my... spin... on a hand spinner... sorry.
You will need a pack of minimum 3 miniature bearings: 695-2rs (5 x 13 x 4 mm)
The spinner body is 4 mm tall (Actually 3.5 mm) and the Buttons is 2 mm's each. So assembled together with bearings should give a max width of 9 mm.
It might not be a super fast or super long spinning spinner, but I don't really care, it gives my hands something to do.
You can also print a pair of extra buttons to place on the other bearings if you don't like the look of the bearings.
You can print buttons in different colors to make your spinner your own!
The two other bearings at the ends are used as weights. And if you want the longest spin, you should choose the Large spinner (Shown in the middle) The one at the top was the first prototype