Modular desktop organizer - sharpie holder
thingiverse
This is an extension of the modular desktop organizer system that allows you store sharpies upright so they are easy to grab. You can find the main project here: https://www.thingiverse.com/thing:5173578 You should be able to print this without supports. just print a dovetail per connecting surface for any other portion of the organizer and fit the parts together.
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