At the Quai Branly Museum in Paris (itself in a very cool building by Jean Nouvel), I saw this awesome luminous wall in the temporary Maori exhibit.  It is a simple design, a stick-framed box faced with 1/4″ MDF panels that were CNC cut and painted out all white.  A couple fluorescent strips at the bottom of the box are all it takes to create a gorgeous wall that relates to the graphic arts of the New Zealand tribal group, the Maori.