Stretcher bond parts for modular wall system

Stretcher Bond wall parts for my modular brickwork system.

I will split into individual units and update as I get time.

Scaled at 1:1 (I am an architect so tend to draft at full size). Scale reductions below:

OO Gauge 1:76 = 1.3158% (or Multiply by 0.0132)
HO Scale 1:87 = 1.1494% (or Multiply by 0.0115)
N gauge (uk) 1:148 = 0.6757% (or Multiply by 0.0068) - note mortar joins might be too small
1:35 (e.g. Tamiya tanks) = 2.8571% (or Multiply by 0.0286)
1:72 (e.g. Airfix) = 1.3889% (or Multiply by 0.0139)

Useful scale calculation tool here - https://www.scalemodelersworld.com/online-scale-converter-tool.html

Please suggest modules you would find helpful.