We have several doors around the labs at work and we often need to prop them open.  We had the opportunity to make some new ones, so I hopped on the computer, fired up Fusion360 and started designing.  This doorstop prints well with a color change, however it is not necessary.  I recommend printing with thicker walls for these, so my provided .gcodes have 5 perimeters and are printed at .3mm layer height.  Not much to it, just slice however you see fit and hit print!  

I typically design in imperial measurements.  If a part comes in and it is too small, adjust the scale of that part to 2540% and it will be correct. Alternatively, in PrusaSlicer, you can right click the model and select “Convert From Imperial Units”.