This is a basic enclosure for the lithocoin design (https://www.thingiverse.com/thing:3320123) that has a door that presses the button when it is opened.
Note that the "full" STL is there to show the assembled part and should not be printed.
Print the top and lid parts rotated 180 degrees so that the flat surfaces are down.
Once all parts are ready, the lithocoin box should be pressed into the body first. Then pop the hinge of the lid into the hinge sleeve, and press the hinge sleeve into the body. At this point the top can be slid onto the lid hinge and pressed down on the body.