My wife tasked me with designing a storage solution for her thread bobbins and other sewing accessories that could be mounted to the back of a cupboard door. I printed mine in PETG for a little added durability, but PLA/others would likely be fine.

Included are spike rods that have both wide and narrow spacing for wider and narrower sized bobbins. There's also a shorter spike rod that can be placed above or below the hook-on open box container. All accessories simply push through the holes in the mounting board and hook in place. They can be removed and relocated as required.

The main hole board has been made with stand offs allowing just enough room for the modular accessories to push through and hook in place. Countersunk mounting holes allow for a clean finish when screwing the board to a surface.

I'm open to suggestions for other types of accessories should you need something different for use with the hole board.