Le Parfait jars are great for storage, but their lids are not designed to be stacked. When placing one jar on top of another, they tend to wobble and shift. This stacking ring sits on top of the lid and provides a stable surface for the jar above. It allows multiple jars to be stacked vertically without slipping.

The Weishi 1000 and 1900 timegrapher is a great tool for hobbyists, but the stand supports your watch on a small bare aluminum piece. It works, yet the direct metal contact always felt risky and could scratch a case if you are not careful. I designed a small curved cover that slides snugly onto the support. It is quick to print and more durable than temporary fixes. Print it in TPU or FLEX for a soft but stable protective surface.