State 4-H STEM Innovator Tori Nelms watches the stopwatch on her phone as Nina Tomlin, 9; Barrett Gates, 8; and Norimi Tomlin, 7; all of Shawnee, test their zip line container, which holds a ping pong ball, during the 'Build It: Zip Line Zoom' program at the Shawnee Public Library on July 21. Children worked together to build their containers, then tested them on six already-made zip lines made of cotton string or fishing line. Fellow Innovators Madison Maddox & Tony Nelms, plus 4-H Educator Kacie Jasper.