The school didn’t have very good air conditioning where one of my younger friends started teaching.  The class room doors were normally blocked open to provide for any cooling and ventilation that was available.  Door stops were in demand and were periodically borrowed/disappeared.

This was one solution for that problem.  The top is labeled with its home/owner.  If borrowed and employed upside down somewhere else (i.e. attempted incognito), the bottom label was an attempt to shame the culprit into returning the contraband. 

An example STL file is provided, but, you can use the OpenSCAD file to generate a doorstop with your own custom labels.
 

Printing

I printed using ABS with no support.  I used a 0.25mm Z-step and 20% hexagonal fill.  When slicing I used 4 vertical shells (periphery shells) to get good surface coverage on the top.