A pretty straightforward spindle, that spins. I'll also upload the non-spinning version.
My print was warped because I'm using a build surface I haven't dialed-in yet, but it still works fine! Use a brim if your printer is prone to warping.
Link to the model in OnShape, so you can modify this online for free: https://cad.onshape.com/documents/52e0bdbdc4ea3400f43f49a8/w/fc5a5c2cbd4cd04bc6494cff/e/3b22b8c8faf4b8fcf120ba33
The author hasn't provided the model origin yet.