3D printing frogs in MEL.The Illini Algae Research Group exhibits algae-based technologies.Autonomous robotic arm sponsored by P&G picks up a package using suction.Kids play around Grainger Bob.Making cotton candy in MSEB.Octocopter made primarily of carbon fiber on display in Engineering Hall.An exhibit detailing how stem cells can accelerate wound healing displays a realistic model.Ford displays a GT outfitted for track racing.Ford displays a GT outfitted for track racing.Ford displays a GT outfitted for track racing.Self-driving potato: the potato acts as a salt bridge between zinc and copper electrodes to create a low-output battery.View of the quad from Grainger’s 4th floor.The Illinois Space Society displays its “New Deal” rocket.The American Institute of Aeronautics and Astronautics (AIAA) chapter launches a rocket over Boneyard Creek. Spectators watch AIAA’s rocket launch.Students demonstrate sugar science using taffyA boy holds a spinning bike wheel while standing on a platform. Angling the bike wheel toward the horizontal causes the boy to rotate on the platform, while holding it vertically keeps him in place.The Biomedical Engineering Society displays a vein finder prototype. The tool is designed to help nurses visualize veins in “tough-to-stick” patients.