This first photo represents the first four planets. The wall to the right is the sun so Mars would be the pink Lego on the left (we didn't have a red Lego). We had to count 3-4 paper clips to find the releative orbits for each planet.
Many, MANY paperclips later we put down Neptune. We actually ran out of hallway and house before we reached Pluto (which is technically not classified as a planet anymore). Since it was in our book and since it's still a favorite in my mind we "went around the corner" to finish our paperclip line.