A standard pallet and a variety of boxes scaled precisely to 1mm = 1inch. We use this as a tool for our shipping team to assemble pallets of boxes in different ways to quickly and easily estimate freight shipping dimensions. With the scaling done as it is, you can use a ruler or calipers in mm to represent real world inch dimensions. The boxes are all labeled with the nominal dimensions. Each box is actually slightly oversized to account for the thickness of the cardboard! It's a useful tool but it could also be simply a fun desk accessory or funny office gift.
I used 2 types of wood filament for the pallet and boxes. The only additional materials required is a bot of super glue to assemble the pallet