These are boxes to store your credit- or other plastic cards, there is a model for paper money with a gluable clip, and one for cards to pull out like the iClip. The lid has an included pin for keeping it closed, for the boxes there is a pin to glue in.
Of course you can use every box standalone with the lid.
Best printed in PETG for added rigidity. The model with the card clip must be printed with support, ideally only for the clip.
The author marked this model as their own original creation.