I am not sure who gets the credit for this idea, but I have been making stool samples out of wood since 1987, always sized to fit in 35mm film cans. I've posted 2 sizes, 28mm and 25mm, referring to the diameter of the top. These are best printed in the orientation that I've posted. This is a very easy and quick to print model with 0.2mm layers.
The author marked this model as their own original creation.