This attractive project has a wonderful, traditional texture as well as the classic miter angles. Another key point is, of course, that it's easy and highly customizable in size: just add more squares!
The full article about this pattern is here:
More info about project photographed here Mitered Granny Square Blanket.
Mossy Miter Blanket
Here is another moss stitch project idea. As mentioned, it's based on the Moss Stitch worked into a in a Square Blanket pattern by Sarah Zimmerman. The geometric illusion is super well conceived, and will undoubtedly draw in many an unwary eye. To summarize, the project uses Bernart pop yarn in ebony and ivory colorways.