When I was thinking about what kind of geocache would be suitable for the forest, I came up with a bird that lives in the forest - an owl. I tested the first prototype for several months in the field at different temperatures and humidity. This prototype showed me that moisture often got inside and destroyed the logbook.

That's why I designed an inner container with a lid. Now I think the logbook will be dry. I printed the model as a single color and then I hand-painted the eyes for a better look.