Moving onto walls or well in this post wall partitions, now thats an interesting thing to find in a play area but they can be of a large amount of help as it allows for a wall for which to stick objects onto, act as a blocker between areas that you might not want the child to get into or see and to help break up the areas of the play area.
they also help in this case to allow for each section of the map to have a background or sorts, in the forms of drawings relating to the specific areas so one of the areas would be a cowboy town, so the drawings stuck upon the partitions can show canyons and indian homes, all helping to set the mood for the area.
Lasso Incorporated 