Keep all your colored pencils in one compact caddy that expands out for viewing and for pencil access. Each section holds 10 pencils and simply snaps onto the adjacent section. Add as many sections as you need for your pencil collection. The sections are identical, except for one end-section that has no clips.

Once assembled, all the sections can be aligned in a compact, upright configuration, or they can all slide out relative to one another for a good view of your color choices.

Printing
Print as many middle sections (on the first plate) as you need, plus one end section (from the second plate). I used PLA with 0.2mm layers. No supports are needed. Use a a 0.4mm nozzle or smaller.