This repo contains CAD drawings of the shelf I use to store and operate my Prusa i3 MK2s.
The spool holder, the work light and the camera arm all contain printed parts. These available in ./printed-parts-stls. Their source solidworks files can be found alongside the cad for the rest of the parts on the shelf in ./solidworks.
Origins and design rationale for the work light have been described in this blog post.