Printed a clearance test on our 3D printer. Having a family member with autism, who absolutely loves fidgets, I tried to find a test that would result in a nice fidget for him. I found this one - where only the .1 had to be given a whack with a screw-driver handle.
I am wondering if there are more cool fidgets that may or may not double as 3D-printer tests.
Also tagging for autism, in hopes that some experts on fidgets will chime in too.