Using a huge frame w/ a desktop size Calendar. If you can, get the style that will allow you to easily slip each month into the side. White on the glass with small tip dry erase pens. You can even color code per person and group events.
DIY Weekly dry-erase board using a collage frame found at Walmart! Print days of week onto pretty paper, and put a different day into each section (behind glass). Write on glass with dry-erase markers.