Almost one in four children (Europe & USA) doesn’t get enough exercise, and 1 in 4 children globally doesn’t get enough food. UNICEF’s Fitbit-like Kid Power Band, designed by San Francisco-based Ammunition, aims to address both problems at once. Its mobile app encourages kids to be physically active with videos from stars like Pink and Alex Morgan. Once they meet step goals, it awards them points, which translate to real food packages that UNICEF sends to malnourished children all over the globe (funded in part by sales of the device). The band “allows kids to feel like they can change the world,” says Rajesh Anandan, who co-created it. Since Kid Power Band’s soft launch in 2014, participants have collectively walked over 7 million miles to feed more than 30,000 severely malnourished children.