I got tired of fishing one pill/caplet from each of four different bottles each night, so I decided to design and fabricate a one-pill/caplet dispenser, using the original pill bottle as the reservoir.

I used Open SCAD to design the transition piece from bottle cap to pill dispenser, and wound up with three different sizes (56mm, 44mm, 39mm) for my own use. The Open SCAD scripts are fully customizable, so other pill/pill bottle sizes can be accommodated. I designed the different slide/slide-box pieces in TinkerCad, and mated them with the appropriate transition piece there.

The dispenser design is three distinct pieces - the slide, the slide box, and the slide-to-bottle transition. They can all be printed together with a dual-extrusion printer using dissolvable filaments, or printed as two separate assemblies (slide-to-bottle transition as one piece, and the slide/slide box as the other). The slide/slide box combination should be printed vertically for the least work removing the support material