Customisable Lettered Blocks 2cm

I originally coded these because I couldn't buy a small quantity of 2cm cubes for kids to stack and use for fine motor developmental assessments. I have to say I didn't look hard through thingiverse for other blocks. The SCAD is given so you can customise blocks to what you want. I plan to get a set of multi coloured small segments of PET to print out a prettier set.

Thanks to Mrj666 for the Modular Containers for Tactix/Montgomery Storage Boxes (https://www.thingiverse.com/thing:2521883) which neatly fit 16 cubes. I upscaled a larger one by a few mm to act as a snug-fitting lid.