a remix of a similar box from Collinsb. I enlarged strengthening the tab for opening. The cover was getting stuck on the divider walls. added a few corner fillets. 

It has worked fine for me out of standard PLA.

there are 3 parts. the main box, side panel and the roll top. Insert the Roll top in the main box and glue on the side panel. there are pins to keep it in place. Be carful not to let glue get in the top channel. While the glue dries open and close the top to make sure it does not get glued in position.

The updated changes made the assembled box stack-able.  Interlocking the stack. I also added some edges that will  minimize the problems with gluing together.

a week of Pills once a day
 

included are the STL file and the Solidworks 2022 model.

V4

v5 

added interlocking features.  Allowing stacking boxes.

v6 

Added text on the sides for days of the week. Even if your printer is you might print half of the first part of the first layer.