Parametric detergent/powder measuring cups, customisable using FreeCAD and the included Python script.
These also have an inner ridge to measure an interim volume.
Two sizes are provided - 40ml/27ml for Persil (UK) liquid, and 145ml/80ml for Ariel (UK) powder.
I recommend printing in PETG as PLA isn't very robust for detergents.
I'm using FreeCAD 1.0.1, so using an older version may not give good results.
The author marked this model as their own original creation.