I want to say that one of the things we have taught the Kidlins is safety of motorized vehicles. Tractors are common vehicle that they are exposed to and get excited about. Now they don't want to miss out on anything so they do very well at following this safety rule. When they hear a vehicle they are taught to stand next to a building or fence to be seen. Same with cars. Children like to run and greet parents but until parents get out of the car they are to stay in the fenced playground.
So, doing very well at following the safety rules they were a big help getting the sandbox put together.