About 1985 I learned enough PostScript to do a little graphics stuff. I soon decided that coding in PostScript was bad for my mental health and attitude. In the meantime I did:
A hex board to produce a piece of paper upon which one could play the game of Hex. You can modify the value of n, now defined as 17, on line two of the program for different size boards.
A variant to make many small boards on one page in order to study small board puzzles. Number and size are parameters.
A program to tile the hyperbolic plane with regular pentagons. Some background here.