A very simple stand made in TinkerCad.

My first creation so it's not perfect, but it works just fine.

I wanted a stand that would fit into a standard fidget spinner bearing, for one that I press fit into the Mini Octopus I printed from https://makerworld.com/en/models/13859?from=search#profileId-13655

I scaled it down until the inner space was 22mm to fit a bearing.

Pretty sure it should work with other spinner toys.