I store my filament in Sterilite 19324306 20-Quart Gasket Boxes with Blue Aquarium Latches. I use loose bead desiccant, so I wanted a tray to keep the spools out of the beads. Additionally, it helps prevent the beads from sliding around too much in the box. The tray prints in two halves that snap together with a tab/slot.
6 Pack of the boxes on Amazon: https://tinyurl.com/4kr3nchn
I also designed a Humidity Sensor Mount to work with these same boxes.
The author marked this model as their own original creation.