This Fidgets 2.0 project is by YouTuber and 3D printing enthusiast Marc 3DP. He downloaded 21 different designs for unusual fidget spinners and 3D-printed all of them.

Here he demonstrates each of them in turn, separating the video into short chapters so you can jump from design to design:

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All of the designs he printed are downloadable; he's got the complete list, with credits and links, here.

By the bye, to what do you attribute the popularity of fidget spinners? The trend is less than a decade old, having emerged around 2017, and to date no social scientist has precisely pegged the reason behind their uptake. If I had to guess, it's that humans have an inherent need to manipulate physical objects—use tools, really—and our current reality, where we speak commands and swipe glass rectangles, isn't scratching that itch.