I took him there to see their old money chute and cable system with which money was sent from various spots in the shop to a central cashier in the past. Although the system isn't in use anymore, its still in working order.
As I was explaining to Chaos Boy how the system worked, one of the shop assistants stood closer and asked him if he would like to see how it works. Do birds have wings? I picked him up and he pulled the lever closest to us in the photo. The front section pulls back to spring load before it shoots off along the cable to the central cashier point. Just more proof that its always possible to find something interesting to show a child, doesn't matter where you go.