Encourages visual memory, copying, direction planning and movement. Can grade the activity by only having the colors needed or having the child pick the colors out of a bin of numerous legos of different, shapes, sizes and colors.
Brody's Room in Pirate! I could totally do this in our house! Our gallery wall and paneling wraps around to right outside Mason's room, I might just have to slap a few coats of chalkboard paint on there! And maybe some magnetic paint under?