littleBits are great for introducing kids to science and engineering, but kits are not cheap. Most of the basic ones start at $60 and an investment of several hundred dollars is needed to acquire a variety of sensors, parts, and motors for more complex projects. Beyond the monetary cost, however, is the intangible value of opening up your child's mind to exploration and science at an early age.Of course, you could put together something similar with an electronics kit and breadboard for a fractiSee full review