Three types of cardboard units, railways, blackboard, and tunnels, are spread around the site, like building blocks. A train runs along the rails on the floor and suddenly climbs up a wall, and eventually fades into the mountain far away. Blackboards can be drawn from every angle.
Sensory: Use soft foam tiles for a sensory room/area floor! The faux-wood can be more calming than loud colors and is also more "adult-looking" for a sensory room teens and adults will be using. http://www.foamtiles.com/tiles/38-soft-wood-tiles.html