The Museum of Helicopter and Elevator Parts

The other day Dexter interrupted me while I was working to show me the "museum of helicopter and elevator parts" he had just made out of wooden blocks.  It was pretty amazing (the helicopter parts were pretty obvious to me but he had to point out the elevator parts).  I asked what his inspiration was for this museum. When he looked at me quizzically, I asked what gave him the idea for this, what made him think of it. "Well, I was just getting bored and I started thinking about building a museum and I thought of helicopter parts and elevator parts and then I got my blocks and built it."  Such a mystery how that mind works!