contests Win a Tinkering Labs Electric Motors Catalyst Set Metro Parent Editorial • February 1, 2017 Add Comment Tweet Got a kid who loves STEM, robotics, tinkering and building? Tinker Labs sets were made for little inventors just like yours. The open-ended toy is not only educational, but great for imagination. With the Electric Motors Catalyst Set, kids can build any number of toys powered by electric motors. The set even comes with Challenge Cards to spark some ideas! This contest has ended. Click here to enter one of our other contests! Entries are no longer being accepted for this contest.