This model might not fit into an actual Altoid box (I've used a similar metal case).
However it should be easy to modify the provided FreeCAD file to adapt to boxes of similar size.
This model allows to coil your earphones and store them inside a small tin box. in the inside you should be able to store other small items like adapters or ear-plugs.
The model was designed to be printed without requiring supports
Model size: 57 mm x 92 mm x 19 mm (corner radius 15 mm)
If you need the model for a different box and are able to provide me accurate metric measurements I can try to export a model for you.
The author marked this model as their own original creation.