In January 2014, I entered the "Hack the Arduino Robot!” competition. On February 3, 2014, I found out that I was one of the 10 finalists and I received a free Arduino Robot to implement my idea. You can see all the other projects here.
Here is the project description that I submitted:
A couple of years ago, I built an Arduino-powered shirt-folding machine which folds clothes. Using the Arduino robot from the RobotChallenge, I will build a device to remove folded clothes from the machine and to stack them. My idea is special because it will involve two Arduinos (the Arduino Uno in the shirt folder, and the Arduino robot) which will have to communicate, and because it will be very useful. The robot will solve the real life problem of laundry folding by making the task easier and faster and by doing so nicely; the robot will use a custom-designed gripper to transport garments while keeping them perfectly folded.