Customizable stick safe end cap (eye protector)

Do you grow flowers supported by bamboo sticks at home? Have you ever tried to imagine what will happen when you lean over to water the flowers and overlook a bamboo stick? Maybe you have kids playing around these flowers and their protruding sticks?

This mini project is to mitigate the risk you have imagined. Simple yet effective "eye protector".

All end cap dimensions can be customized in the attached SCAD file. There are also a few example STL files added to the list.

Just a hint - if you missed a stick diameter, and a printed part is too large, you can use e.g., a hot glue.