Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:2163765.

My daughter liked the spinner I printed but it was too big for her hand. So I shrunk it by 5mm to fit her hand better - that was still too big so I shrunk it another 5mm to make a micro version.

Thanks to @daGHIZmo sharing his onshape design it was super easy to modify. I just copied it in onshape then double clicked on the sketch and changed the arm dimension.

Then for fun I made a penta-spinner version for myself - because I could.

Here's my onshape design - the three variants are all there in the versions/history menu: https://cad.onshape.com/documents/58c0b0b5ff4c260f851c0a6b/w/3295abe8432cecd3054a4dec/e/02714b37254cba08c4f137f9