This is a variation of my Wooden DND Box. It all slides together into one compact unit. The Dice Tower and the Trackers slide out and there are holes for 4mm x 2mm magnets to keep them locked when storing/transporting.

I printed the one pictured at 0.15mm Layer height, but I have also printed one at 0.2mm layer height that fit together perfectly fine.

Overall dimensions are 168mm x 116mm x 33mm

Dice Box: Has compartments for Dice, MiniFigs, Pegs, and a Dice Tray (small)

Dice Box Dimensions: 116mm x 116mm x 33mm
Internal dimensions are:
Dice Compartment - 60mm x 65mm x 28mm
Dice Tray - 83mm x 44mm x 28mm
MiniFig Compartment - 60mm x 39mm x 28mm
Peg Compartment - 21mm x 44mm x 28mm
Dice Tower Dimensions: 116mm x 54mm x 33mm
Lid/Tracker Dimensions: 112mm x 114mm x 5mm
Spell Slots - Levels 1 thru 9
Death Saves
Hit Points - Counters 1 - 999
Inspiration - 6 slots for those who use more than one point
Misc - 10 slots for tracking things like luck, tokens, etc.

Assembly Instructions:

Pretty easy to assemble. Slide the pieces together. Slides may be a little tough to slide together at first, just slide them in and out as much as needed until they slide in and out smoothly.
For the magnets you may need to get a 4mm drill bit (or a knife if you are brave) to make sure the holes are 4mm wide, but I have not had to do this much - usually they just push into place using plyers - the big trick will be aligning the magnets correctly so they grab each other.