Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5157397.

We bought this game and wanted something to keep track of each scene. At first we used glass gems, but they distort the image and make it harder to see. These simple rings help organize the case clearly and simply. I printed about 35 and they make it through most of the longer cases. If you have troubles printing, slow down the speed and it should print easily. Also works for the Eye Found It kids games.

12/30/21 Update: Micro Macro Ring (1) is less blocky and more smooth.