A tunnel frames the relationship between the children. The tunnel is accessible from both ends, thereby encouraging two children to play. The fact that the tunnel is stationary and doesn’t roll eliminates the need for the children to manage a prop and provides a support for their own bodyweight. Also, the tunnel is not so tall that the children cannot look at their friend on the other side. Notice how the act of looking through the tunnel creates a stronger sense of relationship with one’s playmate. The tunnel concretizes the idea that each child is looking toward the other in a way that looking across the room does not. The tunnel offers the children two perspectives. It is fun to see part of a friend’s body when looking through the tunnel—the tunnel frames the familiar in an unfamiliar way. It is also reassuring to look over the top of the tunnel and see a familiar face. Notice that the children do not crawl to meet inside the tunnel. Instead, they enjoy engaging with each other at a distance while co-constructing this adapted version of an interactive social game.