Meet the littleBits Star Wars Droid: a STEM kit that allows your kids to build their own droid with littleBits electronic blocks. It comes with step-by-step instructions and doesn’t require fancy tools. You can access missions and challenges on the Droid Inventor app on iOS and Android devices.
The kit consists of motor, sensor, speaker, and other blocks. The droid can be controlled using a joystick, sliders, and tilting. Costs under $100 at this time.