Summary

Simple pill box... This is my very first ever design and use of a CAD program, so please be gentle.

EDIT/NEW: I added Pill Box MKII.. This one has two sliders, dates printed on the slider lids, and rails are triangular to make them much more printer friendly.. The lids in this version slide in much smoother and, again, lock in at the end with a "click".
The two file for this are "z-base-double.stl" and "z-pill-box-lid-double-dated-BOTH.stl"
I added some photos of the new box, also.

ORIGINAL POST (re:Single lid version)
The base has rails for the lid to slide in that may need supports.. They printed fine on my printer without any, but I still plan on tweaking the design a little so that it has triangular grooves instead of rectangular, so that it's more printer-friendly.

The lid is tapered on 3 sides to allow smoother sliding in and out. The front of the lid has a raised ledge to grab for opening and closing, and also thickens out on the sides (with no tapering) right at the end. This allows the lid to "click" and sort of "lock" at the very end so it doesn't slide out on its own.

Hope this has use for someone.