This is a simple modular pen holder. The holes perfectly fit Copic markers and the vast majority of common art supplies. This organizer can be infinitely expanded by adding more slots and supports using the puzzle like dovetails. This is perfect for large collections of art supplies and stationary and can be changed and personalized. The design can also be remixed to make new modules for specific supplies or oddly shaped objects.
Once all of the parts are printed slide them into the dovetails. The fit is very tight so using a table for support is very useful. If the parts still don't slide together you can scale up the parts to create more tolerance or use some sandpaper to make the male end of the dovetail smaller. No glue is needed but it can be added if you would like this to be permanent.
The back support should be printed with the logo facing upwards with the flat side on the print bed, this makes the lettering cleaner. If the parts art too tight and don't fit scaling them up slightly could help.