Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5144617.

Box with sliding lid and hidden compartment

place/glue shelf to the four post.

slide in partition into the vertical slot.

slide lid into horizontal slots.

Printed with .3 layer height

<h3>UPDATE:</h3> added a small drawer for the hidden compartment.

Thingiverse has failed to fix the "Download all files" button. Therefore I added a zip file in the files section.