So the Srinivasans launched Trashbots, a kit that allows young people to build bots using cheap supplies like rubber bands, paper clips, and ice-pop sticks. Sidharth and Rohit Srinivasan love solving problems. GreenWorx now operates with four trucks and a peak-season crew of 12 to 15 people -- mostly high school students. Today, Adebogun is no longer bashful about his age -- or his success. Image credit: Jake Chessum. When Sanil Chawla was a sophomore in high school, he wanted to launch a web development startup as a way to monetize his hobby. It sounds like the windup to a punchline: a techy teen and an opera singer walk into a community outreach event and…stumble upon a million-dollar app idea.