What equipment do astronauts use on the International Space Station? How can you combine the function of two of these items into one? If you are a K-12 student in the United States, your challenge is to create a digital 3D model of an object that serves TWO functions on the International Space Station. Your design must be intended to be 3D printed and used in two different ways. The winning TEEN design will be 3D printed on the International Space Station and the total volume of filament used to print the TEEN winning design can be no more than 50 cubic centimeters. It's time to double up on your creativity to design a solution - good luck!