Simple Hygrometer holder for cereal boxes

This is a very simple project designed to hold a hygrometer inside 4-liter airtight cereal containers, commonly used for storing 1 kg filament spools in a humidity-controlled environment. This support consists of two parts: the base and the holder.The base needs to be fixed to the bottom of the container using double-sided adhesive tape. The holder is removable and is attached to the base with an M3 screw (6 mm or 8 mm long), allowing easy removal of the hygrometer when needed.The files include two print plates with two different versions of the base:One version requires a 6 mm deep M3 brass threaded insert.The second version does not require an insert and allows the use of a standard M3 wood or metal screw, which can be driven directly into the hole.