In high school for an in class project we took some receipt tape and laid out the distances between the planets. Every cm was 10 million miles. The 4 inner planets were all within a narrow band and the outer planets were much much father apart. It really showed the scale of the solar system.
The Grand Rapids museum has a large replica of the Earth, turns on the axis, and spotlights simulate the day side. There's a replica of the Moon, of a sort, placed 200 or so feet away, at the other end of the "whale room", to impress visitors with the scale of just the Earth-Moon system. Kinda humbling.