My Concentration was based on cars and drawing the events of the year of the car. So if the event was interesting then i would draw it on the side of the car. My first concentration was a Chevy C10 1989. So the events were when the first Simpsons came out and the nintendo gameboy.
The second concentration was a Nissan gtr and the idea was based on the brand of car so it was japanese. So I drew mount everest and cherry blossoms. The image on the car was mount everest and water on the side of the car.