A perfect tool for fishermen is just such a box on the earthworm, I think of skillful fishermen will serve well on their fishing trips. In the coral part of the lid there are holes with a diameter of 2 mm, which the earthworm should not climb through.
In the photos, the box is highlighted in color just for effect so that everything is well known.
I recommend printing from PETG or ASA or any solid material, bullets thread at the top.
It is printed on two parts, the lid and the box separately.
The author marked this model as their own original creation.