I were really enjoyed coloring my prints with Sharpie markers using Color blender design by Devin Enrique!
So I made an mount for my Comgrow filament dryer box (Also released by brand SOVOL) that makes it possible to attach this sharpie blender directly to it.
The best part is that You don't need to modify your dryer at all - just unscrew the original filament output insert from the dryer a little, slide on the mount, tighten the screw back and You've done! It can sit here all the time and You still can use the silicone plug to cover the hole when not needed.
I printed mine with transparent PETG, but PLA or any other non-flexible material should be fine.
Support are needed for a print (see the slicer screenshot).
The author remixed this model.
It's just the mount part was remixed to fit comgrow or sovol filament dryer.