I made the walls thicker so it's sturdier and added a sliding lid.
Lid has a tolerance of 0.08mm on each side. Printed on my SE and the lid slides perfectly. I recommend printing the box first and then just a section of the lid to make sure it will be a good fit.
I have provided the model files if you want to test different tolerances or make any other changes.
I used a piece of double sided tape under the box so it doesn't move.
The left side has a groove for the following cable clip from thingiverse:
https://www.thingiverse.com/thing:6417863
The author remixed this model.
Added a sliding lid and made the walls 2mm thick.