Since I printed all the gloomhaven miniatures I needed to have a storage system as well for this. I am using A5 magnetic sheets while the miniatures are equipped with bases that have metal inserts thus they stick to the sheet as well as the number system which will be uploaded soon (once uploaded I will edit this one). The storage system has an a5 interior size and an external height of 80mm. Can be shoved in a shelve or hidden in a cabinet. For example I am color coding each tray so that I can have an inventory of all the minis that are found in the bronze tray etc.

If you need it to be modified, attached is an *.f3d as well which you can modify. 

Update 1:

• Created trays where you can simply add the miniatures if you don't have a magnetic system.
• Added inserts for basic bases (20mm, 25mm, 40mm, 50mm, 75mm). Considering there is an editable file you can create your own. Otherwise let me know if you need a specific size.
• Created 2 versions of inserts (one that can print without supports and one without)
• Modified the top lid to have a 0 top and bottom walls and use only infill, this way you can save some of the materials.
• Added photos with my own finished project.

If you have more ideas that can be easily implemented let me know and I can create another update.

Update 2:

Shaved off 0.5 mm from the inserts so it can fit properly with a loser fit.