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My invention was quite simple. What I did was get a piece of paper and drew a smiley face and I had a few words on the paper that said just... smile. I had decided to tape the paper to the back of our car. The reason I chose to tape it there was whenever we went into town to go somewhere and then we parked somewhere then somebody could read the sign and it would make their day and make them smile. We have many vehicles at our house so when we must go somewhere, I always convince my parents to take the vehicle with the poster so people can see it and make their day.