This is my remix of Jelle's Stackable D&D Dice Box V1. I had some tolerance and fitment issues with their model, so I corrected that and made a few other tweaks. 

• Increased height of all boxes to allow 25mm miniatures to fit inside (I can fit about 9 minis, but this could vary depending on the exact mini)
• Removed dice tray to allow for more dice to fit in each box (I can fit two sets of dice per box, you might be able to fit even more depending on your dice!)
• Swapped the D&D Logo to the top of the lid so it's facing out when the lid is on.
• Other tolerance and fitment improvements

Just as with Jelle's models, print one bottom tier and a lid, and as many middle tiers as you want/need!

• PLA/PETG
• 0.2 - 0.3mm layer height
• 40mm/s print speed
• 15% infill recommended (probably could get away with less)
• Print the lid upside-down

I don't suggest changing the scaling, as you may experience fitment difficulties between the clasps and slots on the boxes. If you do have any fitment issues, quickly hit the tabs with a heat gun or hairdryer on high heat, and press the two parts together to marry up correctly. 

I have provided the STEP files as well if you'd like to make any edits to the sizing of the boxes.

Have fun!