Genius. I got a 4x8 sheet of half-inch plywood cut into thirds at Home Depot to end up with 3 pieces of 32x48" -- a good size to fill the empty wall in the dining room. With one-inch spacing, it gave me 32x48 pixels. I scaled down a world map to that size and posterized it to 5 colors (white + 4 shades of gray).
I am obsessed with French Memo Boards. A new way to use fabric in a room (other than throw pillows)...yes please! I have been using plywood covered in batting and furniture tacks from Lowe's. Practically every room in the house is getting one!