They were standing at the window. Initially I suggested to work on counting. This worked for "1 car, 2, car, 3 cars." They then started jumping up and down screaming 'car, car, car" like it was the greatest thing since sliced cheese they had ever seen. This went on for 20 minutes.
I am not sure when in life we decide that those simple things can not bring us pleasure. But I think there is something to be said about taking pleasure in small things.
1 Thessalonians 5:18 (NKJV) In everything give thanks; for this is the will of God in Christ Jesus for you.