I found the simple but great rolling pin spacer by JoerT, but needed a ¼" spacer. Rather than just settle for like 6.3mm, like a sane person, I decided to dig into the file and add some options. As a result, the thickness parameter is kind of strange. If it is set to 4, the thickness will be 4mm if metric is on and ¼ inch if it is off.
Printed in TPU, 50% infill and it seems to work.
The author remixed this model.
The original file produced a ring with half the specified thickness, due to a bug, now fixed.
This version also adds option for thickness in inches and the option to put the label text on the outside of the ring, which is easier to see when on the rolling pin, but maybe messier.
A few STL files at the (new) default 60mm diameter are included.