New June 15, 2018(spin_104.stl)
This is a spinner inspiered by "Foreverspin" and modified to 3D printing.
It spins well nearly 2 minutes, though it is not solid.
You need additional metal parts,
ø12.5 x ø26.0 x 2.3mm steel washer.
ø2.0 stainless shaft with rounded ends.
Parts view in ObjectVR.